2020-12-21 | John Brebbia | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0.8m) [Free Agent] | P | 6-1 | 200 | R | R | 1990-05-30 | Boynton Beach,FL | 2011- 30- 929-NYA
| MLB | 2017-2019 | 2009-2019 |
2020-12-20 | Trevor Oaks | --- | Free Agt | Released by Giants | P | 6-3 | 220 | R | R | 1993-03-26 | Riverside,CA | 2014- 7- 219-LAN
| MLB | 2018-2018 | 2013-2018 |
2020-12-16 | Anthony DeSclafani | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($6m) [Free Agent] | P | 6-1 | 200 | R | R | 1990-04-18 | Freehold,NJ | 2011- 6- 199-TOR
| MLB | 2014-2020 | 2009-2020 |
2020-12-10 | Dedniel Nunez | San Francisco Giants | Active | Drafted from Mets by Giants in Rule 5 Draft | P | 6-2 | 180 | R | R | 1996-06-05 | Puerto Plata,DR | 2016- 0- 0-NYN
| A+ | | 2017-2019 |
2020-12-09 | Chadwick Tromp | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0m) [Free Agent] | C-dh | 5-8 | 221 | R | R | 1995-03-21 | Oranjestad,AA | 2013- 0- 0-CIN
| MLB | 2020-2020 | 2013-2020 |
2020-12-08 | Matt Wisler | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($1.15m) [Free Agent] | P | 6-3 | 215 | R | R | 1992-09-12 | Bryan,OH | 2011- 7- 233-SDN
| MLB | 2015-2020 | 2011-2020 |
2020-12-02 | Austin Slater | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($1.15m) [Avoids Arbitration] | RF-1B | 6-1 | 204 | R | R | 1992-12-13 | Jacksonville,FL | 2014- 8- 238-SFN
| MLB | 2017-2020 | 2012-2020 |
2020-12-02 | Wandy Peralta | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0.925m) [Avoids Arbitration] | P | 6-0 | 217 | L | L | 1991-07-27 | San Francisco de Macoris,DR | 2009- 0- 0-CIN
| MLB | 2016-2020 | 2010-2020 |
2020-12-02 | Trevor Gott | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0.7m) [Avoids Arbitration] | P | 5-10 | 182 | R | R | 1992-08-26 | Lexington,KY | 2013- 6- 178-SDN
| MLB | 2015-2020 | 2011-2020 |
2020-12-02 | Jarlin Garcia | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0.95m) [Avoids Arbitration] | P | 6-3 | 215 | L | L | 1993-01-18 | Santo Domingo,DR | 2010- 0- 0-MIA
| MLB | 2017-2020 | 2011-2020 |
2020-12-02 | Alex Dickerson | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($2m) [Avoids Arbitration] | LF-RF | 6-2 | 226 | L | L | 1990-05-26 | Poway,CA | 2011- 3- 91-PIT
| MLB | 2015-2020 | 2009-2020 |
2020-11-20 | Camilo Doval | San Francisco Giants | Active | Contract purchased from minors | P | 6-2 | 185 | R | R | 1997-07-04 | Yamasa,DR | 2015- 0- 0-SFN
| A+ | | 2016-2019 |
2020-11-20 | Kervin Castro | San Francisco Giants | Active | Contract purchased from minors | P | 6-0 | 185 | R | R | 1999-02-07 | Maracay,VZ | 2015- 0- 0-SFN
| A- | | 2016-2019 |
2020-11-20 | Gregory Santos | San Francisco Giants | Active | Contract purchased from minors | P | 6-2 | 190 | R | R | 1999-08-28 | San Cristobal,DR | 2015- 0- 0-BOS
| A | | 2016-2019 |
2020-11-20 | Alexander Canario | San Francisco Giants | Active | Contract purchased from minors | CF-RF | 6-1 | 165 | R | R | 2000-05-07 | Monte Cristi,DR | 2016- 0- 0-SFN
| A- | | 2017-2019 |
2020-11-11 | Kevin Gausman | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($18.9m) [Free Agent] accepted qualifying offer | P | 6-2 | 190 | L | R | 1991-01-06 | Centennial,CO | 2012- 1- 4-BAL
| MLB | 2013-2020 | 2011-2020 |
2020-11-10 | Jason Vosler | San Francisco Giants | Active | Signed to 1-year contract for 2021-2021 ($0m) [Free Agent] | 3B-1B | 6-1 | 190 | L | R | 1993-09-06 | West Nyack,NY | 2014- 16- 469-CHN
| AAA | | 2012-2019 |
2020-11-02 | Buster Posey | San Francisco Giants | Active | Reinstated to active roster | C-1B- | 6-1 | 205 | R | R | 1987-03-27 | Leesburg,GA | 2008- 1- 5-SFN
| MLB | 2009-2019 | 2006-2019 |
2020-11-02 | Jordan Humphreys | San Francisco Giants | Active | Reinstated to active roster | P | 6-1 | 190 | R | R | 1996-06-11 | Crystal River,FL | 2015- 18- 539-NYN
| A+ | | 2015-2019 |
2020-10-02 | Reyes Moronta | San Francisco Giants | Active | Activated from Injured List | P | 5-10 | 265 | R | R | 1993-01-06 | Santiago,DR | 2010- 0- 0-SFN
| MLB | 2017-2019 | 2011-2019 |
2020-10-02 | Aramis Garcia | San Francisco Giants | Active | Activated from Injured List | C-1B- | 6-1 | 228 | R | R | 1993-01-12 | Pembroke Pines,FL | 2014- 2- 52-SFN
| MLB | 2018-2019 | 2012-2019 |
2020-10-02 | Tyler Beede | San Francisco Giants | Active | Activated from Injured List | P | 6-2 | 216 | R | R | 1993-05-23 | Auburn,MA | 2014- 1- 14-SFN
| MLB | 2018-2019 | 2012-2019 |
2020-10-02 | Joey Rickard | San Francisco Giants | Active | Activated from Injured List | LF-RF | 6-0 | 192 | R | L | 1991-05-21 | Redding,CA | 2012- 9- 302-TBA
| MLB | 2016-2020 | 2010-2020 |
2020-09-29 | Jeff Samardzija | --- | Free Agt | Released by Giants | P | 6-5 | 215 | R | R | 1985-01-23 | Merrillville,IN | 2006- 5- 149-CHN
| MLB | 2008-2020 | 2004-2020 |
2020-09-28 | Luis Alexander Basabe | San Francisco Giants | Active | Activated from Injured List | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-09-28 | Sam Coonrod | San Francisco Giants | Active | Activated from Injured List | P | 6-1 | 225 | R | R | 1992-09-22 | St. Louis,MO | 2014- 5- 148-SFN
| MLB | 2019-2020 | 2012-2020 |
2020-09-28 | Trevor Gott | San Francisco Giants | Active | Activated from Injured List | P | 5-10 | 182 | R | R | 1992-08-26 | Lexington,KY | 2013- 6- 178-SDN
| MLB | 2015-2020 | 2011-2020 |
2020-09-28 | Chadwick Tromp | San Francisco Giants | Active | Activated from Injured List | C-dh | 5-8 | 221 | R | R | 1995-03-21 | Oranjestad,AA | 2013- 0- 0-CIN
| MLB | 2020-2020 | 2013-2020 |
2020-09-26 | Sam Coonrod | San Francisco Giants | IL-10 | IL-10 Right shoulder strain | P | 6-1 | 225 | R | R | 1992-09-22 | St. Louis,MO | 2014- 5- 148-SFN
| MLB | 2019-2020 | 2012-2020 |
2020-09-26 | Rico Garcia | San Francisco Giants | Active | Recalled from minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-09-25 | Jeff Samardzija | San Francisco Giants | Active | Activated from Injured List | P | 6-5 | 215 | R | R | 1985-01-23 | Merrillville,IN | 2006- 5- 149-CHN
| MLB | 2008-2020 | 2004-2020 |
2020-09-23 | Luis Alexander Basabe | San Francisco Giants | IL-10 | IL-10 Right hamstring strain | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-09-23 | Steven Duggar | San Francisco Giants | Active | Recalled from minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-09-22 | Tyler Heineman | San Francisco Giants | Active | Recalled from minors | C-1B- | 5-10 | 199 | B | R | 1991-06-19 | Los Angeles,CA | 2012- 8- 249-HOU
| MLB | 2019-2020 | 2010-2020 |
2020-09-22 | Chadwick Tromp | San Francisco Giants | IL-10 | IL-10 Right shoulder strain | C-dh | 5-8 | 221 | R | R | 1995-03-21 | Oranjestad,AA | 2013- 0- 0-CIN
| MLB | 2020-2020 | 2013-2020 |
2020-09-22 | Justin Smoak | --- | Free Agt | Released by Giants | 1B-DH | 6-4 | 220 | B | L | 1986-12-05 | Goose Creek,SC | 2008- 1- 11-TEX
| MLB | 2010-2020 | 2006-2020 |
2020-09-21 | Alex Dickerson | San Francisco Giants | Active | Reinstated to active roster | LF-RF | 6-2 | 226 | L | L | 1990-05-26 | Poway,CA | 2011- 3- 91-PIT
| MLB | 2015-2020 | 2009-2020 |
2020-09-19 | Alex Dickerson | San Francisco Giants | Pat Lv | Placed on paternity leave list | LF-RF | 6-2 | 226 | L | L | 1990-05-26 | Poway,CA | 2011- 3- 91-PIT
| MLB | 2015-2020 | 2009-2020 |
2020-09-19 | Andrew Suarez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-09-19 | Wandy Peralta | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 217 | L | L | 1991-07-27 | San Francisco de Macoris,DR | 2009- 0- 0-CIN
| MLB | 2016-2020 | 2010-2020 |
2020-09-19 | Daniel Robertson | San Francisco Giants | Active | Recalled from minors | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-09-18 | Wandy Peralta | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 217 | L | L | 1991-07-27 | San Francisco de Macoris,DR | 2009- 0- 0-CIN
| MLB | 2016-2020 | 2010-2020 |
2020-09-18 | Rico Garcia | San Francisco Giants | Minors | Assigned to minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-09-18 | Shaun Anderson | San Francisco Giants | Active | Recalled from minors | P | 6-4 | 228 | R | R | 1994-10-29 | Coral Springs,FL | 2016- 3- 88-BOS
| MLB | 2019-2020 | 2014-2020 |
2020-09-18 | Andrew Suarez | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-09-14 | Daniel Robertson | San Francisco Giants | Minors | Assigned to minors | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-09-13 | Rico Garcia | San Francisco Giants | Active | Recalled from minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-09-13 | Trevor Gott | San Francisco Giants | IL-10 | IL-10 Right elbow inflammation | P | 5-10 | 182 | R | R | 1992-08-26 | Lexington,KY | 2013- 6- 178-SDN
| MLB | 2015-2020 | 2011-2020 |
2020-09-13 | Daniel Robertson | San Francisco Giants | Active | Recalled from minors | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-09-10 | Pablo Sandoval | --- | Free Agt | Released by Giants | 3B-1B | 5-10 | 268 | B | R | 1986-08-11 | Carabobo,VZ | 2002- 0- 0-SFN
| MLB | 2008-2020 | 2004-2020 |
2020-09-10 | Justin Smoak | San Francisco Giants | Active | Contract purchased from minors | 1B-DH | 6-4 | 220 | B | L | 1986-12-05 | Goose Creek,SC | 2008- 1- 11-TEX
| MLB | 2010-2020 | 2006-2020 |
2020-09-10 | Rico Garcia | San Francisco Giants | Minors | Assigned to minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-09-10 | Drew Smyly | San Francisco Giants | Active | Activated from Injured List | P | 6-2 | 188 | L | L | 1989-06-13 | Little Rock,AR | 2010- 2- 68-DET
| MLB | 2012-2020 | 2009-2020 |
2020-09-08 | Luis Alexander Basabe | San Francisco Giants | Active | Recalled from minors | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-09-08 | Daniel Robertson | San Francisco Giants | Minors | Assigned to minors | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-09-07 | Abiatal Avelino | --- | Free Agt | Released by Giants | SS-2B | 5-11 | 186 | R | R | 1995-02-14 | San Pedro de Macoris,DR |
| MLB | 2018-2019 | 2012-2019 |
2020-09-06 | Rico Garcia | San Francisco Giants | Active | Recalled from minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-09-06 | Andrew Suarez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-09-05 | Steven Duggar | San Francisco Giants | Minors | Assigned to minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-09-05 | Austin Slater | San Francisco Giants | Active | Activated from Injured List | RF-1B | 6-1 | 204 | R | R | 1992-12-13 | Jacksonville,FL | 2014- 8- 238-SFN
| MLB | 2017-2020 | 2012-2020 |
2020-09-01 | Daniel Robertson | San Francisco Giants | Active | Recalled from minors | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-08-31 | Anthony Banda | San Francisco Giants | Active | Traded from Rays to Giants for cash | P | 6-2 | 230 | L | L | 1993-08-10 | Sinton,TX | 2012- 10- 335-MIL
| MLB | 2017-2020 | 2012-2020 |
2020-08-28 | Luis Alexander Basabe | San Francisco Giants | Minors | Assigned to minors | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-08-27 | Luis Alexander Basabe | San Francisco Giants | Active | Recalled from minors | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-08-26 | Joey Rickard | San Francisco Giants | Active | Contract purchased from minors | LF-RF | 6-0 | 192 | R | L | 1991-05-21 | Redding,CA | 2012- 9- 302-TBA
| MLB | 2016-2020 | 2010-2020 |
2020-08-26 | Shaun Anderson | San Francisco Giants | Minors | Assigned to minors | P | 6-4 | 228 | R | R | 1994-10-29 | Coral Springs,FL | 2016- 3- 88-BOS
| MLB | 2019-2020 | 2014-2020 |
2020-08-24 | Hunter Pence | --- | Free Agt | Released by Giants | LF-DH | 6-4 | 210 | R | R | 1983-04-13 | Fort Worth,TX | 2004- 2- 64-HOU
| MLB | 2007-2020 | 2003-2020 |
2020-08-23 | Sam Coonrod | San Francisco Giants | Active | Activated from Injured List | P | 6-1 | 225 | R | R | 1992-09-22 | St. Louis,MO | 2014- 5- 148-SFN
| MLB | 2019-2020 | 2012-2020 |
2020-08-23 | Daniel Robertson | San Francisco Giants | Minors | Claimed off waivers from Rays by Giants | 3B-SS | 5-11 | 210 | R | R | 1994-03-22 | Upland,CA | 2012- 1- 34-OAK
| MLB | 2017-2020 | 2012-2020 |
2020-08-22 | Steven Duggar | San Francisco Giants | Active | Recalled from minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-08-22 | Austin Slater | San Francisco Giants | IL-10 | IL-10 Left groin strain | RF-1B | 6-1 | 204 | R | R | 1992-12-13 | Jacksonville,FL | 2014- 8- 238-SFN
| MLB | 2017-2020 | 2012-2020 |
2020-08-21 | Yolmer Sanchez | --- | Free Agt | Released by Giants | 2B-3B | 5-8 | 205 | B | R | 1992-06-29 | Maracay,VZ | 2009- 0- 0-CHA
| MLB | 2014-2020 | 2010-2020 |
2020-08-20 | Joey Bart | San Francisco Giants | Active | Contract purchased from minors | C-dh | 6-2 | 238 | R | R | 1996-12-15 | Buford,GA | 2018- 1- 2-SFN
| MLB | 2020-2020 | 2016-2020 |
2020-08-20 | Tyler Heineman | San Francisco Giants | Minors | Assigned to minors | C-1B- | 5-10 | 199 | B | R | 1991-06-19 | Los Angeles,CA | 2012- 8- 249-HOU
| MLB | 2019-2020 | 2010-2020 |
2020-08-19 | Andrew Suarez | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-08-19 | Steven Duggar | San Francisco Giants | Minors | Assigned to minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-08-17 | Steven Duggar | San Francisco Giants | Active | Recalled from minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-08-17 | Dereck Rodriguez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 208 | R | R | 1992-06-05 | Plantation,FL | 2011- 6- 208-MIN
| MLB | 2018-2020 | 2011-2020 |
2020-08-12 | Conner Menez | San Francisco Giants | Minors | Assigned to minors | P | 6-2 | 206 | L | L | 1995-05-29 | Hollister,CA | 2016- 14- 425-SFN
| MLB | 2019-2020 | 2016-2020 |
2020-08-12 | Rico Garcia | San Francisco Giants | Minors | Assigned to minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-08-12 | Dereck Rodriguez | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 208 | R | R | 1992-06-05 | Plantation,FL | 2011- 6- 208-MIN
| MLB | 2018-2020 | 2011-2020 |
2020-08-10 | Luis Alexander Basabe | San Francisco Giants | Minors | Assigned to minors | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-08-09 | Luis Alexander Basabe | San Francisco Giants | Active | Traded from White Sox to Giants for cash | CF-LF | 6-0 | 180 | B | R | 1996-08-26 | El Vigia,VZ | 2013- 0- 0-BOS
| MLB | 2020-2020 | 2013-2020 |
2020-08-09 | Jeff Samardzija | San Francisco Giants | IL-10 | IL-10 Right shoulder impingement | P | 6-5 | 215 | R | R | 1985-01-23 | Merrillville,IN | 2006- 5- 149-CHN
| MLB | 2008-2020 | 2004-2020 |
2020-08-09 | Jarlin Garcia | San Francisco Giants | Active | Activated from Injured List | P | 6-3 | 215 | L | L | 1993-01-18 | Santo Domingo,DR | 2010- 0- 0-MIA
| MLB | 2017-2020 | 2011-2020 |
2020-08-09 | Andrew Suarez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-08-08 | Andrew Suarez | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-08-06 | Andrew Suarez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-08-06 | Steven Duggar | San Francisco Giants | Minors | Assigned to minors | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-08-03 | Andrew Suarez | San Francisco Giants | Active | Recalled from minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-08-03 | Andrew Triggs | San Francisco Giants | Minors | Assigned to minors | P | 6-4 | 233 | R | R | 1989-03-16 | Nashville,TN | 2012- 19- 583-KCA
| MLB | 2016-2020 | 2009-2020 |
2020-08-02 | Jordan Humphreys | San Francisco Giants | Active | Traded from Mets to Giants for Billy Hamilton | P | 6-1 | 190 | R | R | 1996-06-11 | Crystal River,FL | 2015- 18- 539-NYN
| A+ | | 2015-2019 |
2020-08-02 | Jordan Humphreys | San Francisco Giants | Minors | Assigned to minors | P | 6-1 | 190 | R | R | 1996-06-11 | Crystal River,FL | 2015- 18- 539-NYN
| A+ | | 2015-2019 |
2020-08-02 | Andrew Triggs | San Francisco Giants | Active | Contract purchased from minors | P | 6-4 | 233 | R | R | 1989-03-16 | Nashville,TN | 2012- 19- 583-KCA
| MLB | 2016-2020 | 2009-2020 |
2020-07-31 | Sam Coonrod | San Francisco Giants | IL-10 | IL-10 Right lat strain | P | 6-1 | 225 | R | R | 1992-09-22 | St. Louis,MO | 2014- 5- 148-SFN
| MLB | 2019-2020 | 2012-2020 |
2020-07-31 | Sam Selman | San Francisco Giants | Active | Recalled from minors | P | 6-2 | 198 | R | L | 1990-11-14 | Austin,TX | 2012- 2- 66-KCA
| MLB | 2019-2020 | 2010-2020 |
2020-07-30 | Jaylin Davis | San Francisco Giants | Minors | Assigned to minors | RF-CF | 5-11 | 205 | R | R | 1994-07-01 | McLeansville,NC | 2015- 24- 710-MIN
| MLB | 2019-2020 | 2013-2020 |
2020-07-30 | Brandon Belt | San Francisco Giants | Active | Activated from Injured List | 1B-LF | 6-3 | 231 | L | L | 1988-04-20 | Nacogdoches,TX | 2009- 5- 147-SFN
| MLB | 2011-2020 | 2008-2020 |
2020-07-30 | Joe McCarthy | San Francisco Giants | Minors | Assigned to minors | LF-RF | 6-3 | 220 | L | L | 1994-02-23 | Scranton,PA | 2015- 5- 148-TBA
| MLB | 2020-2020 | 2013-2020 |
2020-07-30 | Steven Duggar | San Francisco Giants | Active | Recalled from Sacramento (AAA) | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-07-30 | Evan Longoria | San Francisco Giants | Active | Activated from Injured List | 3B | 6-1 | 213 | R | R | 1985-10-07 | Downey,CA | 2006- 1- 3-TBA
| MLB | 2008-2020 | 2005-2020 |
2020-07-28 | Chadwick Tromp | San Francisco Giants | Active | Contract purchased from minors | C-dh | 5-8 | 221 | R | R | 1995-03-21 | Oranjestad,AA | 2013- 0- 0-CIN
| MLB | 2020-2020 | 2013-2020 |
2020-07-23 | Joe McCarthy | San Francisco Giants | Active | Recalled from Sacramento (AAA) | LF-RF | 6-3 | 220 | L | L | 1994-02-23 | Scranton,PA | 2015- 5- 148-TBA
| MLB | 2020-2020 | 2013-2020 |
2020-07-23 | Brandon Belt | San Francisco Giants | IL-10 | IL-10 Right achilles tendonitis | 1B-LF | 6-3 | 231 | L | L | 1988-04-20 | Nacogdoches,TX | 2009- 5- 147-SFN
| MLB | 2011-2020 | 2008-2020 |
2020-07-23 | Rob Brantly | San Francisco Giants | Active | Contract purchased from minors | C-1B | 6-2 | 190 | L | R | 1989-07-14 | Scottsdale,AZ | 2010- 3- 100-DET
| MLB | 2012-2020 | 2009-2020 |
2020-07-23 | Shaun Anderson | San Francisco Giants | Active | Recalled from Sacramento (AAA) | P | 6-4 | 228 | R | R | 1994-10-29 | Coral Springs,FL | 2016- 3- 88-BOS
| MLB | 2019-2020 | 2014-2020 |
2020-07-23 | Conner Menez | San Francisco Giants | Active | Recalled from Sacramento (AAA) | P | 6-2 | 206 | L | L | 1995-05-29 | Hollister,CA | 2016- 14- 425-SFN
| MLB | 2019-2020 | 2016-2020 |
2020-07-23 | Caleb Baragar | San Francisco Giants | Active | Contract purchased from minors | P | 6-3 | 215 | R | L | 1994-04-09 | Jenison,MI | 2016- 9- 275-SFN
| MLB | 2020-2020 | 2015-2020 |
2020-07-23 | Rico Garcia | San Francisco Giants | Active | Contract purchased from minors | P | 5-9 | 201 | R | R | 1994-01-10 | Honolulu,HI | 2016- 30- 890-COL
| MLB | 2019-2020 | 2013-2020 |
2020-07-23 | Tyler Heineman | San Francisco Giants | Active | Contract purchased from minors | C-1B- | 5-10 | 199 | B | R | 1991-06-19 | Los Angeles,CA | 2012- 8- 249-HOU
| MLB | 2019-2020 | 2010-2020 |
2020-07-23 | Darin Ruf | San Francisco Giants | Active | Contract purchased from minors | lf-dh | 6-2 | 232 | R | R | 1986-07-28 | Omaha,NE | 2009- 20- 617-PHI
| MLB | 2012-2020 | 2006-2020 |
2020-07-23 | Pablo Sandoval | San Francisco Giants | Active | Contract purchased from minors | 3B-1B | 5-10 | 268 | B | R | 1986-08-11 | Carabobo,VZ | 2002- 0- 0-SFN
| MLB | 2008-2020 | 2004-2020 |
2020-07-22 | Dereck Rodriguez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 208 | R | R | 1992-06-05 | Plantation,FL | 2011- 6- 208-MIN
| MLB | 2018-2020 | 2011-2020 |
2020-07-22 | Andrew Suarez | San Francisco Giants | Minors | Assigned to minors | P | 6-0 | 202 | L | L | 1992-09-11 | Miami,FL | 2015- 2- 61-SFN
| MLB | 2018-2020 | 2012-2020 |
2020-07-08 | Jarlin Garcia | San Francisco Giants | IL-10 | IL-10 Undisclosed | P | 6-3 | 215 | L | L | 1993-01-18 | Santo Domingo,DR | 2010- 0- 0-MIA
| MLB | 2017-2020 | 2011-2020 |
2020-06-28 | Enderson Franco | San Francisco Giants | Active | Recalled from Sacramento (AAA) | P | 6-2 | 170 | R | R | 1992-12-29 | Anaco,VZ |
| MLB | 2019-2019 | 2010-2019 |
2020-06-25 | Nick Vincent | --- | Free Agt | Released by Giants | P | 5-10 | 185 | R | R | 1986-07-12 | Ramona,CA | 2008- 18- 555-SDN
| MLB | 2012-2020 | 2008-2020 |
2020-06-25 | Tyson Ross | --- | Free Agt | Released by Giants | P | 6-6 | 225 | R | R | 1987-04-22 | Berkeley,CA | 2008- 2- 58-OAK
| MLB | 2010-2019 | 2006-2019 |
2020-03-18 | Steven Duggar | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | CF-RF | 6-1 | 187 | L | R | 1993-11-04 | Spartanburg,SC | 2015- 6- 186-SFN
| MLB | 2018-2020 | 2013-2020 |
2020-03-18 | Shaun Anderson | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-4 | 228 | R | R | 1994-10-29 | Coral Springs,FL | 2016- 3- 88-BOS
| MLB | 2019-2020 | 2014-2020 |
2020-03-10 | Jose Siri | San Francisco Giants | Minors | Claimed off waivers from Mariners by Giants | CF-RF | 6-2 | 175 | R | R | 1995-07-22 | Sabana Grande De Boya,DR | 2012- 0- 0-CIN
| AAA | | 2013-2019 |
2020-03-10 | Enderson Franco | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-2 | 170 | R | R | 1992-12-29 | Anaco,VZ |
| MLB | 2019-2019 | 2010-2019 |
2020-03-06 | Melvin Adon | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-3 | 246 | R | R | 1994-06-09 | Santo Domingo,DR |
| AAA | | 2015-2019 |
2020-02-12 | Wilmer Flores | San Francisco Giants | Active | Signed to 2-year contract for 2020-2020 ($6m) [Free Agent] | 1B-2B | 6-2 | 213 | R | R | 1991-08-06 | Valencia,VZ | 2007- 0- 0-NYN
| MLB | 2013-2020 | 2008-2020 |
2020-02-10 | Jarlin Garcia | San Francisco Giants | Active | Claimed off waivers from Marlins by Giants | P | 6-3 | 215 | L | L | 1993-01-18 | Santo Domingo,DR | 2010- 0- 0-MIA
| MLB | 2017-2020 | 2011-2020 |
2020-02-07 | Hunter Pence | San Francisco Giants | Active | Signed to 1-year contract for 2020-2020 ($3m) [Free Agent] | LF-DH | 6-4 | 210 | R | R | 1983-04-13 | Fort Worth,TX | 2004- 2- 64-HOU
| MLB | 2007-2020 | 2003-2020 |
2020-02-03 | Jandel Gustave | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-2 | 160 | R | R | 1992-10-12 | Pimentel,DR | 2010- 0- 0-HOU
| MLB | 2016-2019 | 2010-2019 |
2020-02-03 | Conner Menez | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-2 | 206 | L | L | 1995-05-29 | Hollister,CA | 2016- 14- 425-SFN
| MLB | 2019-2020 | 2016-2020 |
2020-02-03 | Sam Selman | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | P | 6-2 | 198 | R | L | 1990-11-14 | Austin,TX | 2012- 2- 66-KCA
| MLB | 2019-2020 | 2010-2020 |
2020-02-03 | Chris Shaw | San Francisco Giants | Minors | Assigned to Sacramento (AAA) | LF-1B | 6-4 | 220 | L | R | 1993-10-20 | Lexington,MA | 2015- 1- 31-SFN
| MLB | 2018-2019 | 2013-2019 |
2020-02-03 | Kean Wong | San Francisco Giants | Minors | Assigned to Sacramanto (AAA) | 2B-3B | 5-11 | 190 | L | R | 1995-04-17 | Hilo,HI | 2013- 4- 128-TBA
| MLB | 2019-2019 | 2013-2019 |
2020-01-21 | Luis Madero | San Francisco Giants | Active | Claimed off waivers from Angels by Giants | P | 6-3 | 175 | R | R | 1997-04-15 | Maracay,VZ | 2013- 0- 0-ARI
| AA | | 2014-2019 |
2020-01-15 | Zack Cozart | --- | Free Agt | Released by Giants | 3B-SS | 6-1 | 185 | R | R | 1985-08-12 | Memphis,TN | 2007- 2- 79-CIN
| MLB | 2011-2019 | 2005-2019 |
2020-01-13 | Jake Jewell | San Francisco Giants | Active | Claimed off waiver from Angels by Giants | P | 6-3 | 220 | R | R | 1993-05-16 | Norman,OK | 2014- 5- 149-ANA
| MLB | 2018-2019 | 2013-2019 |