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| Given Name: | Jack Gerard |
| Birth Date: | 1978-4-21 |
| Birth City: | Milwaukee |
| Birth Country: | |
| Height: | 75 cm |
| Weight: | 190 kg |
| Bats: | Left |
| Throws: | Left |
| Age: | 47 |
| Teams and Years | Batting Average | Hits | At Bats | Home Runs | Runs Batted In | Wins | Losses | Games Pitched In | Strikeouts | Shutouts | Position | Errors | Double Plays | Assists |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 San Francisco Giants | 0 | 0 | 0 | 0 | 2 | 0 | 24 | 19 | 0 | P | 0 | 0 | 3 | |
| 2006 San Francisco Giants | 0 | 0 | 0 | 0 | 0 | 1 | 24 | 15 | 0 | P | 1 | 1 | 5 | |
| 2007 San Francisco Giants | 0.000 | 0 | 1 | 0 | 0 | 3 | 1 | 63 | 51 | 0 | P | 0 | 0 | 4 |
| 2008 San Francisco Giants | 0 | 0 | 0 | 0 | 3 | 2 | 67 | 39 | 0 | P | 0 | 1 | 6 | |
| 2009 Philadelphia Phillies | 0.000 | 0 | 1 | 0 | 0 | 1 | 1 | 24 | 19 | 0 | P | 0 | 0 | 2 |
| 2010 Los Angeles Dodgers | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | P | 0 | 0 | 0 | |
| 2010 Pittsburgh Pirates | 0 | 0 | 0 | 0 | 1 | 0 | 17 | 17 | 0 | P | 0 | 0 | 6 |