Jeff Williams supporters' website : Record
| Record | ||||||||
| Year | Team | G | W | L | GS | IP | SO | ERA |
| 2003 | Tigers | 52 | 1 | 1 | 25 | 52 2/3 | 57 | 1.54 |
| 2004 | Tigers | 51 | 2 | 4 | 14 | 46 2/3 | 56 | 3.28 |
| 2005 | Tigers | 75 | 3 | 3 | 0 | 76 2/3 | 90 | 2.11 |
| 2006 | Tigers | 47 | 3 | 2 | 3 | 47 1/3 | 49 | 1.90 |
| 2007 | Tigers | 60 | 1 | 2 | 0 | 65 1/3 | 66 | 0.96 |
| Total | 285 | 10 | 12 | 42 | 288 2/3 | 318 | 1.90 | |
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