| Year | Head Coach | Overall |
MIAA |
MIAA | Reg'l | Nat'l | |||
| W-L | Pct. | W-L |
Pct. | Finish | Trny | Trny | Trny | ||
| 1956 | LeRoy Harper | 11-2-1 | .821 | — | — | — | — | — | — |
| 1957 | LeRoy Harper | 15-4 | .789 | — | — | — | — | — | — |
| 1958 | Floyd Rees | 19-3 | .864 | — | — | — | — | — | — |
| 1959 | Floyd Rees | 18-4-1 | .804 | — | — | — | — | — | — |
| 1960 | Floyd Rees | 16-7 | .696 | — | — | — | — | — | — |
| 1961 | Floyd Rees | 17-3 | .850 | — | — | — | — | — | — |
| 1962 | Bill Dey | 19-6 | .760 | — | — | — | — | — | — |
| 1963 | Floyd Walker | 11-8 | .579 | — | — | — | — | — | — |
| 1964 | Floyd Walker | 15-7 | .682 | — | — | — | — | — | — |
| 1965 | Bob Tompkins | 11-9 | .550 | — | — | — | — | — | — |
| 1966 | Bob Tompkins | 15-12 | .556 | ? | ? | ?* | 1st | — | — |
| 1967 | Bob Tompkins | 9-13 | .409 | ? | ? | ?* | ? | — | — |
| 1968 | Frank Chlipala+ | 15-13 | .536 | ? | ? | ?* | ? | — | — |
| 1969 | Bob Tompkins | 11-7 | .611 | ? | ? | ?* | ? | — | — |
| 1970 | Bob Tompkins | 15-11 | .577 | ? | ? | ?* | ? | — | — |
| 1971 | Bob Tompkins | 18-10 | .643 | 11-1 | .917 | 1st | — | ? | — |
| 1972 | Bob Tompkins | 16-13 | .552 | 4-8 | .333 | 6th-tie? | — | — | — |
| 1973 | Bob Tompkins | 18-7 | .720 | 4-4 | .500 | 2nd-tie | — | — | — |
| 1974 | Bob Tompkins | 27-13 | .675 | 9-3 | .750 | 1st | — | 1st | 4th |
| 1975 | Bob Tompkins | 18-7 | .720 | 11-7 | .611 | 4th | — | — | — |
| 1976 | Bob Tompkins | 19-13 | .594 | 9-7 | .563 | 3rd-tie | — | — | — |
| 1977 | Bob Tompkins | 13-14 | .481 | 6-9 | .400 | 6th | — | — | — |
| 1978 | Bob Tompkins | 19-14 | .576 | 6-5 | .545 | 4th | — | — | — |
| 1979 | Bob Tompkins | 16-13 | .552 | 4-8 | .333 | 3rd* | — | — | — |
| 1980 | Bob Tompkins | 23-8-1 | .734 | 6-2 | .750 | 2nd*# | — | — | — |
| 1981 | Gene Weber | 38-13 | .745 | 11-1 | .917 | 1st* | 1st | 4th | — |
| 1982 | Gene Weber | 22-14 | .611 | 4-4 | .500 | 2nd* | — | — | — |
| 1983 | Gene Weber | 17-27-2 | .391 | 3-5 | .375 |
2nd* | — | — | — |
| 1984 | Stu Rogers | 19-17-1 | .527 | 2-3 | .400 |
2nd* | 4th |
— | — |
| 1985 | Stu Rogers | 21-24 | .467 | 10-2 | .833 |
1st* | 4th |
— | — |
| 1986 | Stu Rogers | 27-17 | .614 | 10-2 | .833 |
1st* | 1st |
— | — |
| 1987 | Stu Rogers | 18-17 | .514 | 6-6 | .500 |
3rd* | — |
— | — |
| 1988 | Stu Rogers | 35-19 | .648 | 9-3 | .750 |
2nd*# | 1st |
3rd | — |
| 1989 | Stu Rogers | 38-16-2 | .696 | 8-4 | .667 |
2nd* | 1st |
1st | 7th-tie |
| 1990 | Stu Rogers | 37-18 | .673 | 11-5 | .688 |
2nd* | 1st |
1st | 5th-tie |
| 1991 | Dennis Woody | 33-17 | .660 | 8-3 | .727 |
2nd* | 4th |
3rd | — |
| 1992 | Dennis Woody | 27-17 | .614 | 8-1 | .889 |
1st* | 4th |
— | — |
| 1993 | Dennis Woody | 24-10-1 | .700 | 14-3 | .824 |
1st* | 3rd |
— | — |
| 1994 | Dave Van Horn | 51-11 | .823 | 15-1 | .938 |
1st* | 1st |
1st | 1st |
| 1995 | Brad Hill | 49-10 | .831 | 19-1 | .950 |
1st* | 1st |
1st | 3rd-tie |
| 1996 | Brad Hill | 40-12 | .769 | 16-2 | .889 |
1st* | 1st |
3rd | — |
| 1997 | Brad Hill | 39-13 | .750 | 17-2 | .895 |
1st | 1st |
1st | 5th-tie |
| 1998 | Brad Hill | 39-8 | .830 | 20-2 | .909 |
1st | 1st |
1st | 7th-tie |
| 1999 | Brad Hill | 43-10 | .811 | 20-1 | .952 |
1st | 2nd |
3rd | — |
| 2000 | Brad Hill | 50-13 | .794 | 29-1 | .967 |
1st | 1st |
1st | 5th-tie |
| 2001 | Brad Hill | 53-10 | .841 | 26-3 | .897 |
1st | 1st |
1st | 2nd |
| 2002 | Brad Hill | 54-8 | .871 | 28-3 | .903 | 1st | 1st |
1st | 3rd |
| 2003 | Brad Hill | 51-7 | .879 | 27-2 | .931 | 1st | 1st |
1st | 1st |
| 2004 | Darin Hendrickson | 57-8 | .877 | 26-5 | .839 | 1st | 1st |
1st | 3rd |
| 2005 | Darin Hendrickson | 57-9 | .864 | 27-4 | .871 | 1st | 1st |
1st | 3rd |
| 2006 | Darin Hendrickson | 44-16 | .733 | 22-8 | .733 | 2nd | 1st |
5th-tie | — |
| 2007 | Darin Hendrickson | 51-13 | .797 | 28-6 | .823 | 1st | 2nd |
2nd | — |
| 2008 | Tommy Myers | 47-17 | .734 | 26-8 | .765 | 2nd | 1st |
1st | 4th |
| 2009 | Tommy Myers | 44-15 | .746 | 27-9 | .750 | 2nd | 2nd |
2nd | — |
*MIAA Northern Division finish. #Lost one-game playoff for Northern Division title. +Acting coach while Tompkins was on academic leave of absence. Note: Baseball in the MIAA was played on a divisional basis from 1966 through 1970 and from 1979 through 1996. The MIAA champion was determined by a best-of-three playoff between the two divisional winners from 1966 through 1970 and from 1979 through 1983. From 1984-2000, the league champion was determined by a double-elimination tournament, with a varying format and number of participating teams. Since 2001, a regular-season and a post-season tournament champion has been determined.