| Year | Team Name | League | Division | Affilate | W | L | Pct | Rank | Managers | Stadium | Playoffs | |
| 2013 | Frederick | Keys | Caro | Northern | BAL | 21 | 20 | .512 | 3 | Ryan Minor | Harry Grove Stadium | dnq |
| 2012 | Frederick | Keys | Caro | Northern | BAL | 62 | 77 | .446 | 4 | Orlando Gomez | Harry Grove Stadium | dnq |
| 2011 | Frederick | Keys | Caro | Northern | BAL | 80 | 59 | .576 | 1 | Orlando Gomez | Harry Grove Stadium | League Champions |
| 2010 | Frederick | Keys | Caro | Northern | BAL | 72 | 68 | .514 | 1 | Orlando Gomez | Harry Grove Stadium | Lost in Semi-Finals |
| 2009 | Frederick | Keys | Caro | Northern | BAL | 64 | 75 | .460 | 4 | Richie Hebner | Harry Grove Stadium | dnq |
| 2008 | Frederick | Keys | Caro | Northern | BAL | 63 | 76 | .453 | 3 | Richie Hebner | Harry Grove Stadium | dnq |
| 2007 | Frederick | Keys | Caro | Northern | BAL | 64 | 74 | .464 | 3 | Tommy Thompson | Harry Grove Stadium | League Champions |
| 2006 | Frederick | Keys | Caro | Northern | BAL | 61 | 77 | .442 | 4 | Bien Figueroa | Harry Grove Stadium | Lost in finals |
| 2005 | Frederick | Keys | Caro | Northern | BAL | 79 | 61 | .564 | 1 | Bien Figueroa | Harry Grove Stadium | League Champions |
| 2004 | Frederick | Keys | Caro | Northern | BAL | 52 | 87 | .374 | 4 | Tom Lawless | Harry Grove Stadium | dnq |
| 2003 | Frederick | Keys | Caro | Northern | BAL | 60 | 75 | .444 | 4 | Tom Lawless | Harry Grove Stadium | dnq |
| 2002 | Frederick | Keys | Caro | Northern | BAL | 47 | 92 | .338 | 4 | Jack Voigt | Harry Grove Stadium | dnq |
| 2001 | Frederick | Keys | Caro | Northern | BAL | 70 | 69 | .504 | 2 | Dave Cash | Harry Grove Stadium | Lost in Semi-Finals (Wilmington) |
| 2000 | Frederick | Keys | Caro | Northern | BAL | 66 | 71 | .482 | 1 | Dave Machemer | Harry Grove Stadium | Lost in Semi-Finals |
| 1999 | Frederick | Keys | Caro | Northern | BAL | 67 | 71 | .486 | 2 | Andy Etchebarren | Harry Grove Stadium | dnq |
| 1998 | Frederick | Keys | Caro | Northern | BAL | 64 | 76 | .457 | 4 | Tommy Shields | Harry Grove Stadium | dnq |
| 1997 | Frederick | Keys | Caro | Northern | BAL | 69 | 71 | .493 | 2 | Dave Hilton | Harry Grove Stadium | Lost in Semi-Finals |
| 1996 | Frederick | Keys | Caro | Northern | BAL | 67 | 72 | .482 | 2 | Tim Blackwell Julio Garcia | Harry Grove Stadium | dnq |
| 1995 | Frederick | Keys | Caro | Northern | BAL | 58 | 79 | .423 | 4 | Mike O'Berry | Harry Grove Stadium | dnq |
| 1994 | Frederick | Keys | Caro | Northern | BAL | 76 | 61 | .555 | 2 | Mike O'Berry | Harry Grove Stadium | dnq |
| 1993 | Frederick | Keys | Caro | Northern | BAL | 78 | 62 | .557 | 1 | Pete Mackanin | Harry Grove Stadium | Lost in Semi-Finals |
| 1992 | Frederick | Keys | Caro | Northern | BAL | 35 | 34 | .507 | 2 | Bob Miscik | Harry Grove Stadium | dnq |
| 1991 | Frederick | Keys | Caro | Northern | BAL | 58 | 82 | .414 | 4 | Wally Moon | Harry Grove Stadium | dnq |
| 1990 | Frederick | Keys | Caro | Northern | BAL | 74 | 62 | .544 | 1 | Wally Moon | Harry Grove Stadium | League Champions |
| 1989 | Frederick | Keys | Caro | Northern | BAL | 73 | 65 | .529 | 1 | Jerry Narron | Harry Grove Stadium | dnq |