| 2023 | Brock Burke |
| 2022 | Brock Burke |
| 2021 | Brock Burke (st) |
| 2020 | Taylor Guerrieri (st1) |
| 2019 | Jeanmar Gómez (until May 26), Peter Fairbanks (Jun 8 onwards) |
| 2018 | Doug Brocail (Pitching coach) |
| 2017 | Doug Brocail (Pitching coach) |
| 2016 | Doug Brocail (Pitching coach) |
| 2015 | Anthony Ranaudo |
| 2014 | Robbie Ross |
| 2013 | Robbie Ross |
| 2012 | Robbie Ross (until Jul 31), Ryan Dempster (Aug 1 onwards) |
| 2011 | Pedro Strop |
| 2010 | Luis Mendoza (st), Pedro Strop (May 15 only) |
| 2009 | Luis Mendoza |
| 2008 | Luis Mendoza |
| 2007 | Bruce Chen |
| 2006 | Bobby Jones (coach) |
| 2005 | Doug Brocail |
| 2004 | Doug Brocail |
| 2003 | John Thomson |
| 2002 | Dennys Reyes (Aug 2 onwards) |
| 2001 | Mark Petkovsek |
| 2000 | Doug Davis |
| 1999 | Doug Davis |
| 1998 | |
| 1997 | Terry Clark |
| 1996 | Kevin Gross, Danny Patterson |
| 1995 | Kevin Gross |
| 1994 | |
| 1993 | |
| 1992 | Lance McCullers, Matt Whiteside |
| 1991 | |
| 1990 | |
| 1989 | |
| 1988 | Tony Fossas |
| 1987 | Mike Loynd |
| 1986 | Mike Loynd |
| 1985 | Burt Hooton |
| 1984 | Jeff Kunkel (st) |
| 1983 | Jim Anderson |
| 1982 | Bob Babcock (st) |
| 1981 | Bob Babcock |
| 1980 | Bob Babcock |
| 1979 | |
| 1978 | |
| 1977 | |
| 1976 | Jeff Terpko |
| 1975 | |
| 1974 | Jeff Terpko |
| 1973 | Steve Dunning |
| 1972 | Walt Masterson (coach) |
Washington Senators Years |
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| 1971 | |
| 1970 | Bill Jurges (coach) |
| 1969 | Bill Jurges (coach) |
| 1968 | |
| 1967 | |
| 1966 | |
| 1965 | Art Quirk (st) |
| 1964 | Bert Thiel (coach, st) |
| 1963 | Carl Middledorf (st) |
| 1962 | |
| 1961 | |
I have a photo I took in June 1982, of Dave Hostetler. In the background is a player, #46. Can’t find out who it is. Maybe Charley Pride? Any idea on that?
That would be Bob Babcock who was in camp in 1982, but didn’t make the club. I’ll update the page. Tkx for that heads up.