| 2023 | Dominic Leone (st) |
| 2022 | Matt Moore |
| 2021 | Jharel Cotton (st, Jul 30 onward) |
| 2020 | Luis Garcia |
| 2019 | Nick Gardewine (st), Locke St. John (Jun 20 onward) |
| 2018 | Nick Gardewine |
| 2017 | Travis Snider (st), Nick Gardewine (Aug 21 onward) |
| 2016 | Derek Holland |
| 2015 | Derek Holland |
| 2014 | Derek Holland (st, Sep 2 – 28) |
| 2013 | Derek Holland |
| 2012 | Derek Holland |
| 2011 | Derek Holland |
| 2010 | Derek Holland (st, May 12 onward) |
| 2009 | Casey Daigle (st), Derek Holland (Apr 18 onward) |
| 2008 | Jamey Wright |
| 2007 | Jamey Wright |
| 2006 | R.A. Dickey (until Apr 6), Carlos Lee (Jul 28 onward) |
| 2005 | R.A. Dickey (until Apr 12, Sep 13 onward) |
| 2004 | R.A. Dickey |
| 2003 | Jason Hart (st), R.A. Dickey (Apr 13 onward) |
| 2002 | Justin Duchscherer (st), Hideki Irabu (until Jul 12) |
| 2001 | Mark Petkovsec (st), Jeff Brantley (until May 29), Justin Duchscherer (Jul 25, Sep 4 onward) |
| 2000 | Chuck Smith (st) |
| 1999 | Eric Moody (st) |
| 1998 | Eric Moody (st) |
| 1997 | Eric Moody (st, Aug 3 – Sep 18) |
| 1996 | Tim Rumer (st) |
| 1995 | Jack Savage (st replacement), Shawn Hare (until Jun 17) |
| 1994 | Brian Bohanon (st, Jun 30 onward) |
| 1993 | Brian Bohanon |
| 1992 | Brian Bohanon |
| 1991 | Brian Bohanon (st, Aug 2 onward) |
| 1990 | Brian Bohanon (until Jun 5) |
| 1989 | Dwayne Henry (st) |
| 1988 | Dwayne Henry (st, May 29, Sep 5 onward) |
| 1987 | Dwayne Henry |
| 1986 | Dwayne Henry |
| 1985 | Dwayne Henry |
| 1984 | Dwayne Henry |
| 1983 | |
| 1982 | Don Kainer (st) |
| 1981 | |
| 1980 | Pat Corrales (Manager) |
| 1979 | Pat Corrales (Manager) |
| 1978 | Pat Corrales (Coach, Manager – Oct 1 only) |
| 1977 | Pat Corrales (Coach) |
| 1976 | Pat Corrales (Coach) |
| 1975 | |
| 1974 | Del Wilber (st coach), Merrill Combs (coach) |
| 1973 | Del Wilber (coach) |
| 1972 | Del Wilber (coach) |
Washington Senators Years |
|
| 1971 | Del Wilber (coach – st), Al Zarilla (coach) |
| 1970 | Del Wilber (coach) |
| 1969 | Wayne Terwilliger (3B coach) |
| 1968 | |
| 1967 | |
| 1966 | |
| 1965 | George Case (coach) |
| 1964 | Sparky Anderson (coach, st) |
| 1963 | Roy Heiser (st) |
| 1962 | |
| 1961 | |
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