List of Harrisburg Senators seasons
This is a list of seasons completed by the Harrisburg Senators of the Eastern League. This list documents the records and playoff results for all seasons the Senators have completed in the Eastern League since their first inception in 1924 through 1935, and their second inception since 1987.
Original Senators (1924–1935)
| Year | Wins | Losses | Winning Pct. | GB | Manager |
| 1924 | 70 | 60 | .539 | -15.5 | Steve Yerkes/Mickey LaLonge/Glen Killinger |
| 1925 | 61 | 69 | .469 | -15 | Rankin Johnson, Sr. |
| 1926 | 47 | 84 | .359 | -35.5 | Rankin Johnson/Joe Lightner |
| 1927 | 87 | 51 | .630 | +6 | Win Clark |
| 1928 | 82 | 54 | .603 | +1 | Glen Killinger |
| 1929 | 75 | 62 | .547 | -7 | Johnny Tillman |
| 1930 | 70 | 69 | .504 | -9.5 | Johnny Tillman |
| 1931 | 83 | 56 | .597 | +3 | Joe Cobb/Eddie Onslow |
| 1932 | 74 | 66 | .529 | -4.5 | Eddie Onslow |
| 1933 | 60 | 76 | .441 | -20 | Eddie Onslow |
| 1934 | 60 | 75 | .444 | -16.5 | Leslie Mann |
| 1935 | 59 | 77 | .434 | -22.5 | Art Shires |
| ORIGINAL SENATORS TOTAL | 828 | 799 | .509 |
Modern-day Senators (1987–present)
| Year | Wins | Losses | Winning Pct. | GB | Manager |
| 1987 | 77 | 63 | .550 | -11 | Dave Trembley |
| 1988 | 65 | 73 | .471 | -15.5 | Dave Trembley |
| 1989 | 71 | 65 | .522 | -19 | Dave Trembley |
| 1990 | 69 | 69 | .500 | -9.5 | Marc Bombard |
| 1991 | 87 | 53 | .621 | +6 | Mike Quade |
| 1992 | 78 | 59 | .569 | -1.5 | Mike Quade |
| 1993 | 94 | 44 | .681 | +19 | Jim Tracy |
| 1994 | 88 | 51 | .633 | +5.5 | Dave Jauss |
| 1995 | 61 | 80 | .433 | -11.5 | Pat Kelly |
| 1996 | 74 | 68 | .521 | -12 | Pat Kelly |
| 1997 | 86 | 56 | .606 | +11 | Rick Sofield |
| 1998 | 73 | 69 | .514 | -8.5 | Rick Sweet |
| 1999 | 76 | 66 | .535 | -9.5 | Doug Sisson |
| 2000 | 76 | 67 | .531 | -9.5 | Doug Sisson |
| 2001 | 66 | 76 | .465 | -18 | Luis Dorante |
| 2002 | 79 | 63 | .556 | -14.5 | Dave Huppert |
| 2003 | 60 | 82 | .423 | -28.5 | Dave Machemer |
| 2004 | 52 | 90 | .366 | -33.5 | Dave Machemer |
| 2005 | 64 | 78 | .451 | -20 | Keith Bodie |
| 2006 | 67 | 75 | .472 | -20 | John Stearns |
| 2007 | 55 | 86 | .390 | -26.5 | Scott Little |
| 2008 | 73 | 69 | .514 | -11 | John Stearns |
| 2009 | 70 | 72 | .493 | -19 | John Stearns |
| 2010 | 77 | 65 | .542 | -5 | Randy Knorr |
| 2011 | 80 | 62 | .563 | +4 | Tony Beasley |
| 2012 | 64 | 78 | .451 | -18.5 | Matthew LeCroy |
| 2013 | 77 | 65 | .542 | +1 | Matthew LeCroy |
| 2014 | 53 | 89 | .373 | -26 | Brian Daubach |
| 2015 | 67 | 75 | .472 | -12 | Brian Daubach |
| 2016 | 76 | 66 | .535 | -1.5 | Matthew LeCroy |
| 2017 | 60 | 80 | .429 | -14 | Matthew LeCroy |
| 2018 | 72 | 65 | .526 | -5.5 | Matthew LeCroy |
| 2019 | 76 | 63 | .547 | -1.5 | Matthew LeCroy |
| CURRENT SENATORS TOTAL | 2363 | 2282 | .509 | ||
| ALL TIME TOTAL | 3191 | 3081 | .509 |
- in GB is behind, + in GB is ahead
Bold years are Eastern League Championship years
| Playoff Results | - | - | - |
| Year | Round | Opponent | Result |
| 1987 | Semi-Finals | vs. Reading | 3-2 |
| Finals | vs. Vermont | 3-1 | |
| 1989 | Semi-Finals | vs. Canton-Akron | 3-2 |
| Finals | vs. Albany | 1-3 | |
| 1991 | Semi-Finals | vs. Canton-Akron | 3-1 |
| Finals | vs. Albany | 1-3 | |
| 1992 | Semi-Finals | vs. Canton-Akron | 1-3 |
| 1993 | Semi-Finals | vs. Albany-Colonie | 3-1 |
| Finals | vs. Canton-Akron | 3-2 | |
| 1994 | Semi-Finals | vs. Bowie | 3-2 |
| Finals | vs. Binghamton | 1-3 | |
| 1996 | Semi-Finals | vs. Trenton | 3-1 |
| Finals | vs. Portland | 3-1 | |
| 1997 | Semi-Finals | vs. Bowie | 3-2 |
| Finals | vs. Portland | 3-1 | |
| 1998 | Semi-Finals | vs. Akron | 3-1 |
| Finals | vs. New Britain | 3-1 | |
| 1999 | Semi-Finals | vs. Erie | 3-1 |
| Finals | vs. Norwich | 3-2 | |
| 2000 | Semi-Finals | vs. Reading | 0-3 |
| 2002 | Semi-Finals | vs. Akron | 3-2 |
| Finals | vs. Norwich | 2-3 | |
| 2010 | Semi-Finals | vs. Altoona | 1-3 |
| 2011 | Semi-Finals | vs. Richmond | 0-3 |
| 2013 | Semi-Finals | vs. Erie | 3-1 |
| Finals | vs. Trenton | 0-3 | |
| 2019 | Semi-Finals | vs. Bowie | 1-3 |
| PLAYOFF RECORD | .522 Win Pct. | 59-54 |