45
Progression
| player | Start Date | End Date | Position |
|---|---|---|---|
| Ron Locke | Apr 13 1964 | Oct 3 1964 | Pitcher |
| Tug McGraw | Apr 11 1965 | May 18 1966 | Pitcher |
| Darrell Sutherland | Jun 30 1966 | Aug 12 1966 | Pitcher |
| Tug McGraw | Aug 10 1966 | Sep 30 1967 | Pitcher |
| Bill Connors | Jul 23 1968 | Sep 28 1968 | Pitcher |
| Tug McGraw | Apr 7 1969 | Oct 2 1974 | Pitcher |
| Rick Baldwin | Apr 8 1975 | Oct 2 1977 | Pitcher |
| Butch Metzger | Apr 7 1978 | Jul 4 1978 | Pitcher |
| Jeff Reardon | Aug 21 1979 | Oct 5 1980 | Pitcher |
| Bob Gibson | Apr 9 1981 | Oct 4 1981 | Coach |
| Brent Gaff | Jul 6 1982 | Sep 30 1984 | Pitcher |
| John Candelaria | Sep 15 1987 | Oct 4 1987 | Pitcher |
| Edwin Nunez | Jul 11 1988 | Oct 2 1988 | Pitcher |
| Mark Carreon | Apr 9 1990 | Oct 6 1991 | Outfield |
| Paul Gibson | May 6 1992 | Jun 11 1993 | Pitcher |
| Mauro Gozzo | Sep 6 1993 | Aug 11 1994 | Pitcher |
| Jerry Dipoto | Apr 26 1995 | Sep 29 1996 | Pitcher |
| Randy Niemann | May 5 1997 | May 21 1998 | Coach |
| John Franco | May 22 1998 | Oct 7 2001 | Pitcher |
| John Franco | May 30 2003 | Oct 3 2004 | Pitcher |
| Pedro Martinez | Apr 4 2005 | Sep 28 2008 | Pitcher |