| 2018 | Potomac Nationals | Carolina League | Northern | WAS | 0 | 0 | 0 | -- | -- | 62 | 46 | 16 | - | Tripp Keister | - | 0 | - | Stats -- Roster |
| 2017 | Potomac Nationals | Carolina League | Northern | WAS | 140 | 63 | 77 | .450 | 24.5 | 570 | 590 | -20 | 5 | Tripp Keister | - | 236,010 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2016 | Potomac Nationals | Carolina League | Northern | WAS | 138 | 73 | 65 | .529 | 10.0 | 619 | 589 | 30 | 2 | Tripp Keister | Lost in Semi-Finals | 195,448 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2015 | Potomac Nationals | Carolina League | Northern | WAS | 139 | 65 | 74 | .468 | 6.5 | 520 | 531 | -11 | 2 | Tripp Keister | - | 217,892 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2014 | Potomac Nationals | Carolina League | Northern | WAS | 136 | 78 | 58 | .574 | -- | 635 | 627 | 8 | 1 | Tripp Keister | League Champions | 243,559 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2013 | Potomac Nationals | Carolina League | Northern | WAS | 139 | 84 | 55 | .604 | -- | 680 | 590 | 90 | 1 | | Lost in Finals | 236,772 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2012 | Potomac Nationals | Carolina League | Northern | WAS | 139 | 64 | 75 | .460 | 7.5 | 590 | 700 | -110 | 3 | Brian Rupp | - | 191,928 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2011 | Potomac Nationals | Carolina League | Northern | WAS | 139 | 68 | 71 | .489 | 12.0 | 583 | 627 | -44 | 2 | Matt LeCroy | Lost in Semi-Finals | 171,096 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2010 | Potomac Nationals | Carolina League | Northern | WAS | 139 | 70 | 69 | .504 | 1.5 | 665 | 642 | 23 | 2 | Gary Cathcart | League Champions | 205,279 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2009 | Potomac Nationals | Carolina League | Northern | WAS | 137 | 79 | 58 | .577 | 4.0 | 674 | 591 | 83 | 2 | Trent Jewett | - | 180,541 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2008 | Potomac Nationals | Carolina League | Northern | WAS | 140 | 79 | 61 | .564 | -- | 720 | 600 | 120 | 1 | Randy Knorr | League Champions | 177,760 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2007 | Potomac Nationals | Carolina League | Northern | WAS | 137 | 69 | 68 | .504 | 6.0 | 682 | 649 | 33 | 2 | Randy Knorr | - | 161,581 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2006 | Potomac Nationals | Carolina League | Northern | WAS | 140 | 64 | 76 | .457 | 4.0 | 623 | 715 | -92 | 2 | Edgar Caceres | - | 151,507 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2005 | Potomac Nationals | Carolina League | Northern | WAS | 140 | 63 | 77 | .450 | 16.0 | 674 | 696 | -22 | 3 | Bob Henley | - | 138,143 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2004 | Potomac Cannons | Carolina League | Northern | CIN | 139 | 67 | 72 | .482 | 10.0 | 690 | 639 | 51 | 2 | Edgar Caceres | Lost in Semi-Finals | 170,278 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2003 | Potomac Cannons | Carolina League | Northern | CIN | 139 | 62 | 77 | .446 | 16.0 | 543 | 579 | -36 | 3 | Jayhawk Owens | - | 160,238 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2002 | Potomac Cannons | Carolina League | Northern | SLN | 140 | 59 | 81 | .421 | 30.0 | 555 | 646 | -91 | 3 | Joseph Cunningham | - | 182,059 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2001 | Potomac Cannons | Carolina League | Northern | SLN | 140 | 66 | 74 | .471 | 12.0 | 532 | 566 | -34 | 3 | Joseph Cunningham | - | 181,758 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 2000 | Potomac Cannons | Carolina League | Northern | SLN | 138 | 62 | 76 | .449 | 4.5 | 597 | 696 | -99 | 4 | Joseph Cunningham | - | 167,988 | G. Richard Pfitzner Stadium | Stats -- Roster |
| 1999 | Potomac Cannons | Carolina League | Northern | SLN | 139 | 54 | 85 | .388 | 23.5 | 619 | 718 | -99 | 4 | Joseph Cunningham | - | 209,168 | G. Richard Pfitzner Stadium | Stats -- Roster |
