| 2025 | Nick Ahmed (st, Apr 23 – May 1) |
| 2024 | Michael Lorenzen (st, Apr 15 – Jul 28) |
| 2023 | Jake Odorizzi (st) |
| 2022 | Jose Trevino (st), Kevin Plawecki (Sep 23 – Oct 4) |
| 2021 | Jose Trevino |
| 2020 | Mike Minor (until Aug 28) |
| 2019 | Mike Minor |
| 2018 | Mike Minor |
| 2018 | Don Wakamatsu (Bench Coach) |
| 2017 | Jeremy Jeffress (st, Apr 4 – Jul 30), Phil Gosselin (Aug 20 onward) |
| 2016 | Nick Tepesch (st), Jeremy Jeffress (Aug 4 onward) |
| 2015 | Nick Tepesch (st) |
| 2014 | Nick Tepesch (st, May 14 – Sep 26) |
| 2013 | Craig Gentry |
| 2012 | Craig Gentry |
| 2011 | Craig Gentry (st, May 7 onward) |
| 2010 | Johnny Narron (st coach), Gregorio Petit (st), Craig Gentry (Apr 27 – Jun 20) |
| 2009 | |
| 2008 | Ben Broussard (until May 2) |
| 2007 | Mark Teixeira (until Jul 29) |
| 2006 | Mark Teixeira |
| 2005 | Mark Teixeira |
| 2004 | Mark Teixeira |
| 2003 | Mark Teixeira |
| 2002 | Mark Teixeira (st), Todd Greene (May 17 – Sep 29) |
| 2001 | Tim Crabtree (st), Pat Mahomes |
| 2000 | Tim Crabtree |
| 1999 | Tim Crabtree |
| 1998 | Jose Guzman (st), Tim Crabtree |
| 1997 | Benji Gil (until Sep 15) |
| 1996 | Benji Gil (st, Sep 18 – 28) |
| 1995 | James Hurst (st replacement), Benji Gil |
| 1994 | Benji Gil (st) |
| 1993 | Mike Schooler (Jun 10 – Sep 3), Gene Nelson (Sep 11 onward) |
| 1992 | Jose Guzman |
| 1991 | Jose Guzman (st, May 23 onward) |
| 1990 | Jose Guzman (st) |
| 1989 | Jose Guzman (st) |
| 1988 | Jose Guzman (until Sep 21) |
| 1987 | Jose Guzman |
| 1986 | Jose Guzman |
| 1985 | Dave Stockstill (st), Jose Guzman (Sep 10 onward) |
| 1984 | Victor Cruz (st) |
| 1983 | Glenn Ezell (bullpen coach), Victor Cruz (Jul 26 – Oct 1) |
| 1982 | Don Zimmer (manager until Jul 28), Pete O’Brien (Sep 3 onward) |
| 1981 | Don Zimmer (manager) |
| 1980 | Brian Allard (st, Jun 7 – Sep 21) |
| 1979 | Gary Gray (until May 25), Brian Allard (Aug 8 – Sep 30) |
| 1978 | Willie Horton (st), Gary Gray (Jul 22 – Sep 24) |
| 1977 | Dave May (st), Willie Horton (Apr 17 onward) |
| 1976 | Nelson Briles |
| 1975 | Stan Thomas |
| 1974 | Elliott Maddox (st), Stan Thomas (Jul 5 – Sep 3) |
| 1973 | Elliott Maddox |
| 1972 | Elliott Maddox (until Aug 29) |
Washington Senators Years |
|
| 1971 | Ron Law (st), Jackie Brown (Jun 8 – Sep 26) |
| 1970 | Bob Humphreys (st, May 23 – Jun 4), Jackie Brown (Jul 2 – Sep 29) |
| 1969 | Bob Humphreys |
| 1968 | Bob Humphreys (st, Apr 30 onward) |
| 1967 | Bob Humphreys |
| 1966 | Tom Cheney (st), Bob Humphreys (Apr 19 onward) |
| 1965 | Don Zimmer |
| 1964 | Tom Cheney (st), Don Zimmer (Apr 16 onward) |
| 1963 | Tom Cheney (until Aug 26) |
| 1962 | Tom Cheney |
| 1961 | Rudy Hernandez (Apr 16 – May 4), Tom Cheney (Jul 4 onward) |
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