1998-12-29 | Luis Pineda | Signed as Free Agent by Tigers. | P | 6-1 | 160 | R | R | 1978-06-10 | San Cristobal,DR | 1995- 0- 0-TEX
| MLB | 2001-2002 | 1996-2004 |
1998-12-28 | Luis Gonzalez | Traded by Tigers to Diamondbacks for Karim Garcia. | LF-OF | 6-2 | 190 | L | R | 1967-09-03 | Tampa,FL | 1988- 4- 90-HOU
| MLB | 1990-2008 | 1987-2008 |
1998-12-28 | Karim Garcia | Traded by Diamondbacks to Tigers for Luis Gonzalez. | OF-RF | 6-0 | 172 | L | L | 1975-10-29 | Ciudad Obregon,MX | 1992- 0- 0-LAN
| MLB | 1995-2004 | 1993-2016 |
1998-12-28 | Gregg Jefferies | Signed as Free Agent by Tigers. | 3B-1B | 5-10 | 185 | B | R | 1967-08-01 | Burlingame,CA | 1985- 1- 20-NYN
| MLB | 1987-2000 | 1985-2000 |
1998-12-18 | Luis Polonia | Signed as Free Agent by Tigers. | OF-DH | 5-8 | 152 | L | L | 1964-10-12 | Santiago,DR | 1984- 0- 0-OAK
| MLB | 1987-2000 | 1984-2002 |
1998-12-18 | David McCarty | Signed as Free Agent by Tigers. | 1B-OF | 6-5 | 215 | R | L | 1969-11-23 | Houston,TX | 1991- 1- 3-MIN
| MLB | 1993-2005 | 1989-2005 |
1998-12-17 | Pedro Swann | Signed as Free Agent by Tigers. | OF-1B | 6-0 | 200 | L | R | 1970-10-27 | Wilmington,DE | 1991- 26- 673-ATL
| MLB | 2000-2003 | 1991-2007 |
1998-12-15 | Alejandro Freire | re-signed by Tigers | 1B-OF | 6-2 | 185 | R | R | 1974-08-23 | Caracas,VZ | 1991- 0- 0-HOU
| MLB | 2005-2005 | 1994-2006 |
1998-12-14 | Eric Ludwick | Selected by Tigers from Marlins in the minor league draft. | P | 6-5 | 210 | R | R | 1971-12-14 | Whiteman AFB,MO | 1993- 2- 50-NYN
| MLB | 1996-1999 | 1993-2002 |
1998-12-14 | Eric Ludwick | Traded by Tigers to Blue Jays for Beiker Graterol. | P | 6-5 | 210 | R | R | 1971-12-14 | Whiteman AFB,MO | 1993- 2- 50-NYN
| MLB | 1996-1999 | 1993-2002 |
1998-12-14 | Beiker Graterol | Traded by Blue Jays to Tigers for Eric Ludwick. | P | 6-2 | 165 | R | R | 1974-11-09 | Lara,VZ | 1992- 0- 0-TOR
| MLB | 1999-1999 | 1996-2000 |
1998-12-14 | Bill Haselman | Signed as Free Agent by Tigers. | C-DH | 6-3 | 223 | R | R | 1966-05-25 | Long Branch,NJ | 1987- 1- 23-TEX
| MLB | 1990-2003 | 1987-2003 |
1998-12-14 | Glen Barker | Selected by Astros from Tigers in Rule 5 major league draft | OF-CF | 5-10 | 180 | R | R | 1971-05-10 | Albany,NY | 1993- 11- 305-DET
| MLB | 1999-2001 | 1993-2003 |
1998-12-14 | Dustin Crouch | Selected by Tigers from Blue Jays in Rule 5 minor league draft | P | 6-2 | 210 | R | R | --- | Amherst,VA |
| NCAA | | 2007-2007 |
1998-12-11 | Trey Beamon | Released by Tigers. | OF-LF | 6-0 | 192 | L | R | 1974-02-11 | Dallas,TX | 1992- 2- 61-PIT
| MLB | 1996-1998 | 1992-2006 |
1998-12-10 | Marino Santana | Purchased by Red Sox from Tigers. | P | 6-1 | 190 | R | R | 1972-05-10 | San Jose de Los Llamas,DR | 1990- 0- 0-SEA
| MLB | 1998-1999 | 1993-1999 |
1998-12-04 | Joe Randa | Traded by Tigers to Mets for Willie Blair. | 3B-2B | 5-11 | 190 | R | R | 1969-12-18 | Milwaukee,WI | 1991- 11- 288-KCA
| MLB | 1995-2006 | 1991-2006 |
1998-12-04 | Bryan Corey | Claimed on waivers by Tigers from Diamondbacks. | P-SS | 6-0 | 170 | R | R | 1973-10-21 | Thousand Oaks,CA | 1993- 12- 333-DET
| MLB | 1998-2008 | 1993-2012 |
1998-12-04 | Willie Blair | Traded by Mets to Tigers for Joe Randa. | P | 6-1 | 185 | R | R | 1965-12-18 | Paintsville,KY | 1986- 11- 289-TOR
| MLB | 1990-2001 | 1986-2001 |
1998-11-25 | David McCarty | Signed by Tigers | 1B-OF | 6-5 | 215 | R | L | 1969-11-23 | Houston,TX | 1991- 1- 3-MIN
| MLB | 1993-2005 | 1989-2005 |
1998-11-24 | Rickey Cradle | Signed as Free Agent by Tigers. | OF-CF | 6-2 | 180 | R | R | 1973-06-20 | Norfolk,VA | 1991- 5- 146-TOR
| MLB | 1998-1998 | 1991-1999 |
1998-11-24 | Felipe Lira | Signed as Free Agent by Tigers. | P | 6-0 | 170 | R | R | 1972-04-26 | Miranda,VZ | 1990- 0- 0-DET
| MLB | 1995-2001 | 1990-2008 |
1998-11-24 | Joe Siddall | Signed as Free Agent by Tigers. | C-OF | 6-1 | 200 | L | R | 1967-10-25 | Windsor,ON | 1987- 0- 0-MON
| MLB | 1993-1998 | 1988-2000 |
1998-11-24 | Nelson Cruz | Signed by Tigers | P | 6-1 | 185 | R | R | 1972-09-13 | Puerto Plata,DR | 1989- 0- 0-MON
| MLB | 1997-2003 | 1991-2005 |
1998-11-23 | Masao Kida | Purchased by Tigers from Orix (Japan Pacific). | P | 6-2 | 210 | R | R | 1968-09-12 | Tokyo,JP | 1998- 0- 0-DET
| MLB | 1999-2005 | 1988-2012 |
1998-11-19 | Nelson Cruz | Signed as Free Agent by Tigers. | P | 6-1 | 185 | R | R | 1972-09-13 | Puerto Plata,DR | 1989- 0- 0-MON
| MLB | 1997-2003 | 1991-2005 |
1998-11-13 | Dean Palmer | Signed as Free Agent by Tigers. | 3B-DH | 6-1 | 210 | R | R | 1968-12-27 | Tallahassee,FL | 1986- 3- 59-TEX
| MLB | 1989-2003 | 1986-2003 |
1998-11-03 | Brian Looney | Signed by Tigers | P | 5-10 | 180 | L | L | 1969-09-26 | New Haven,CT | 1991- 10- 269-MON
| MLB | 1993-1995 | 1991-2005 |
1998-10-06 | Doug Bochtler | Claimed on waivers by Dodgers from Tigers. | P | 6-3 | 215 | R | R | 1970-07-05 | West Palm Beach,FL | 1989- 9- 228-MON
| MLB | 1995-2000 | 1989-2003 |
1998-09-23 | Edgar Huerta | Loaned by Braves to Mexico City Tigers March 16- | P | 5-11 | 140 | L | L | 1979-10-21 | Culiacan,MX |
| AAA | | 2000-2014 |
1998-09-21 | Daniel Garibay | Loaned by Devil Rays to Mexico City Tigers (Mexican) March 24- | P | 5-11 | 160 | L | L | 1973-02-14 | Maneadoro,MX | 1992- 0- 0-LAN
| MLB | 2000-2000 | 1994-2005 |
1998-09-06 | Will Brunson | Claimed on waivers by Tigers from Dodgers. | P | 6-6 | 185 | L | L | 1970-03-20 | Irving,TX | 1992- 21- 577-CIN
| MLB | 1998-1999 | 1992-2001 |
1998-08-28 | Juan Francia | Signed as nondrafted free agent by Tigers | 2B-SS | 5-9 | 145 | B | R | 1982-01-04 | Caracas,VZ |
| AAA | | 2000-2011 |
1998-07-30 | Luis Pineda | Signed as Free Agent by Tigers. | P | 6-1 | 160 | R | R | 1978-06-10 | San Cristobal,DR | 1995- 0- 0-TEX
| MLB | 2001-2002 | 1996-2004 |
1998-07-29 | Victor Mendez | Signed as nondrafted free agent by Tigers | OF-3B | 5-11 | 160 | B | R | 1980-06-28 | Las Matas de Farfan,DR |
| AAA | | 2002-2011 |
1998-07-29 | Ramon Santiago | Signed as undrafted amateur Free Agent by Tigers. | SS-2B | 5-11 | 150 | B | R | 1979-08-31 | Las Matas de Farfan,DR | 1998- 0- 0-DET
| MLB | 2002-2014 | 1999-2015 |
1998-07-20 | Billy Ripken | Released by Tigers. | 2B-SS | 6-1 | 190 | R | R | 1964-12-16 | Havre de Grace,MD | 1982- 11- 286-BAL
| MLB | 1987-1998 | 1982-1998 |
1998-07-18 | Jason Wood | Traded by Athletics to Tigers for Bip Roberts. | 3B-SS | 6-1 | 170 | R | R | 1969-12-16 | San Bernardino,CA | 1991- 11- 307-OAK
| MLB | 1998-2008 | 1991-2008 |
1998-07-16 | Joe Oliver | Released by Tigers. | C-1B | 6-3 | 220 | R | R | 1965-07-24 | Memphis,TN | 1983- 2- 41-CIN
| MLB | 1989-2001 | 1983-2001 |
1998-07-01 | Alonso Beltran | Signed by Mexico City Tigers (Mexican) | P | 5-9 | 163 | R | R | 1972-03-04 | Guadalupe,MX | 1991- 14- 380-TOR
| AAA | | 1991-2008 |
1998-06-29 | Andy Tomberlin | Released by Tigers. | OF-1B | 5-11 | 185 | L | L | 1966-11-07 | Monroe,NC | 1985- 0- 0-ATL
| MLB | 1993-1998 | 1986-2000 |
1998-06-24 | Dave Roberts | Traded by Tigers with Tim Worrell to Indians for Geronimo Berroa. | OF-CF | 5-10 | 175 | L | L | 1972-05-31 | Okinawa,JP | 1994- 28- 781-DET
| MLB | 1999-2008 | 1994-2008 |
1998-06-24 | Geronimo Berroa | Traded by Indians to Tigers for Tim Worrell and Dave Roberts. | OF-DH | 6-0 | 210 | R | R | 1965-03-18 | Santo Domingo,DR | 1983- 0- 0-TOR
| MLB | 1989-2000 | 1984-2003 |
1998-06-24 | Tim Worrell | Traded by Tigers with Dave Roberts to Indians for Geronimo Berroa. | P | 6-4 | 215 | R | R | 1967-07-05 | Pasadena,CA | 1989- 20- 520-SDN
| MLB | 1993-2006 | 1990-2006 |
1998-06-23 | Bip Roberts | Traded by Tigers to Athletics for Jason Wood. | 2B-OF | 5-7 | 165 | B | R | 1963-10-27 | Berkeley,CA | 1982- 1- 13-PIT
| MLB | 1986-1998 | 1982-1998 |
1998-06-12 | Jeff Manto | Released by Tigers. | 3B-1B | 6-3 | 210 | R | R | 1964-08-23 | Bristol,PA | 1985- 14- 355-CAL
| MLB | 1990-2000 | 1985-2000 |
1998-06-01 | Ron Lindsey | Traded by Padres to Tigers for Scott Sanders. | P | 5-10 | 170 | R | R | 1984-04-23 | San Diego,CA |
| NCAA | | 2003-2003 |
1998-05-06 | Scott Sanders | Traded by Tigers to Padres for Rod Lindsey. | P | 6-4 | 220 | R | R | 1969-03-25 | Hannibal,MO | 1990- 1- 32-SDN
| MLB | 1993-1999 | 1988-2004 |
1998-04-24 | Jeff Manto | Claimed on waivers by Tigers from Indians. | 3B-1B | 6-3 | 210 | R | R | 1964-08-23 | Bristol,PA | 1985- 14- 355-CAL
| MLB | 1990-2000 | 1985-2000 |
1998-04-23 | Shane Heams | Signed by Tigers | P-OF | 6-1 | 175 | R | R | 1975-09-29 | Toledo,OH | 1994- 41-1138-SEA
| AAA | | 1995-2005 |
1998-04-23 | Pete Incaviglia | Released by Tigers. | OF-DH | 6-1 | 230 | R | R | 1964-04-02 | Pebble Beach,CA | 1985- 1- 8-MON
| MLB | 1986-1998 | 1986-2002 |
1998-04-02 | Cecilio Garibaldi | Contract purchased by Devil Rays from Mexico City Tigers | P | 6-2 | 214 | R | R | 1978-01-05 | Guasave,MX |
| AAA | | 1998-2015 |
1998-04-02 | Eddie Gaillard | Claimed on waivers by Devil Rays from Tigers. | P | 6-1 | 200 | R | R | 1970-08-13 | Camden,NJ | 1993- 13- 361-DET
| MLB | 1997-1999 | 1993-2006 |
1998-03-30 | Jose Sanchez | Released by Tigers | P | 6-2 | 190 | R | R | 1981-10-11 | Santo Domingo,DR |
| A+ | | 2003-2006 |
1998-03-27 | Clark Parker | Released by Tigers | 2B-P | 5-8 | 160 | L | R | 1975-09-26 | Los Angeles,CA | 1997- 40-1195-DET
| AA | | 1997-2005 |
1998-03-25 | Doug Bochtler | Purchased by Tigers from Athletics. | P | 6-3 | 215 | R | R | 1970-07-05 | West Palm Beach,FL | 1989- 9- 228-MON
| MLB | 1995-2000 | 1989-2003 |
1998-03-25 | Marcus Jensen | Released by Tigers. | C-1B | 6-4 | 204 | B | R | 1972-12-14 | Oakland,CA | 1990- 1- 33-SFN
| MLB | 1996-2002 | 1990-2006 |
1998-03-20 | Kevin Baez | Traded by Tigers to Reds for Tim Belk. | SS-2B | 6-0 | 160 | R | R | 1967-01-10 | Brooklyn,NY | 1988- 7- 182-NYN
| MLB | 1990-1993 | 1988-2005 |
1998-03-20 | Tim Belk | Traded by Reds to Tigers for Kevin Baez. | 1B-OF | 6-3 | 200 | R | R | 1970-04-06 | Cincinnati,OH | 1992- 15- 409-CIN
| MLB | 1996-1996 | 1991-2000 |
1998-03-13 | Jorge Sequea | Signed as nondrafted free agent by Tigers | 2B-SS | 5-10 | 165 | B | R | 1980-10-01 | Anaco,VZ |
| AAA | | 2001-2005 |
1998-03-09 | Kevin Baez | Signed as Free Agent by Tigers. | SS-2B | 6-0 | 160 | R | R | 1967-01-10 | Brooklyn,NY | 1988- 7- 182-NYN
| MLB | 1990-1993 | 1988-2005 |
1998-03-09 | Erik Hiljus | Signed as Free Agent by Tigers. | P | 6-5 | 230 | R | R | 1972-12-25 | Panorama City,CA | 1991- 4- 121-NYN
| MLB | 1999-2002 | 1991-2003 |
1998-03-03 | Robert Ellis | Released by Tigers. | P | 6-5 | 220 | R | R | 1970-12-15 | Baton Rouge,LA | 1990- 3- 77-CHA
| MLB | 1996-2003 | 1991-2005 |
1998-01-29 | Pete Incaviglia | Signed as Free Agent by Tigers. | OF-DH | 6-1 | 230 | R | R | 1964-04-02 | Pebble Beach,CA | 1985- 1- 8-MON
| MLB | 1986-1998 | 1986-2002 |