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| Name: | Denny Mack |
| Given name: | Dennis Joseph |
| Birth place: | Mauch Chunk, PA, USA |
| Birthday: | 3/14/1850 |
| Height: | 67 inches |
| Weight: | 164 lbs |
| Batting: | Right-handed |
| Throwing: | Right-handed |
| Age/Age at time of death: | 38 |
| Year | Team Name | Batting Statistics | Pitching Statistics | Fielding Statistics |
|---|---|---|---|---|
| 1871 | Rockford Forest Citys | Hits: 0 At Bats: 4 HR: 0 RBI: 0 | Wins: 1 Losses: 2 Total Games: 3 Strikeouts: 1 Shutouts: 0 | Position: SS Errors: 2 Double Plays: 0 Assists: 3 |
| 1872 | Philadelphia Athletics | Hits: 18 At Bats: 66 HR: 0 RBI: 7 | Wins: 2 Losses: 15 Total Games: 18 Strikeouts: 5 Shutouts: 0 | Position: OF Errors: 5 Double Plays: 1 Assists: 5 |
| 1873 | Philadelphia Whites | Hits: 16 At Bats: 51 HR: 0 RBI: 10 | Wins: 0 Losses: 2 Total Games: 3 Strikeouts: 0 Shutouts: 0 | Position: 2B Errors: 8 Double Plays: 2 Assists: 23 |
| 1874 | Philadelphia Whites | Hits: 51 At Bats: 213 HR: 0 RBI: 23 | Wins: 1 Losses: 3 Total Games: 6 Strikeouts: 13 Shutouts: 0 | Position: 2B Errors: 48 Double Plays: 7 Assists: 139 |
| 1876 | St. Louis Brown Stockings | Hits: 40 At Bats: 142 HR: 0 RBI: 16 | Wins: 0 Losses: 0 Total Games: 1 Strikeouts: 0 Shutouts: 0 | Position: OF Errors: 13 Double Plays: 0 Assists: 6 |
| 1880 | Buffalo Bisons | Hits: 1 At Bats: 4 HR: 0 RBI: 0 | Wins: 26 Losses: 29 Total Games: 63 Strikeouts: 118 Shutouts: 3 | Position: C Errors: 2 Double Plays: 0 Assists: 5 |
| 1882 | Louisville Eclipse | Hits: 126 At Bats: 348 HR: 1 RBI: 83 | Wins: 4 Losses: 10 Total Games: 14 Strikeouts: 47 Shutouts: 0 | Position: 1B Errors: 45 Double Plays: 42 Assists: 27 |
| 1883 | Pittsburg Alleghenys | Hits: 0 At Bats: 4 HR: 0 RBI: 1 | Wins: 0 Losses: 1 Total Games: 1 Strikeouts: 0 Shutouts: 0 | Position: P Errors: 0 Double Plays: 0 Assists: 1 |