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Denny Mack played 8 major-league seasons (1871-1883) as a 1B (173), SS (169), 2B (32), OF (13), P (3). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 8 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1871 | 21 | RC1 | 25 | 122 | 34 | 30 | 0 | 17 | 12 | 8 | 7 | .246 | .612 | 77 |
| 1872 | 22 | PH1 | 47 | 205 | 68 | 59 | 0 | 34 | 9 | 23 | 9 | .288 | .701 | 119 |
| 1873 | 23 | PH2 | 48 | 205 | 55 | 60 | 0 | 19 | 6 | 15 | 9 | .293 | .658 | 101 |
| 1874 | 24 | PH2 | 56 | 246 | 48 | 51 | 0 | 22 | 4 | 2 | 3 | .207 | .486 | 57 |
| 1876 | 26 | SL3 | 48 | 180 | 32 | 39 | 1 | 7 | 0 | 11 | 5 | .217 | .523 | 76 |
| 1880 | 30 | BFN | 17 | 59 | 5 | 12 | 0 | 3 | 0 | 5 | 7 | .203 | .469 | 63 |
| 1882 | 32 | LS2 | 72 | 264 | 41 | 48 | 0 | — | 0 | 16 | — | .182 | .429 | 49 |
| 1883 | 33 | PT1 | 60 | 224 | 26 | 44 | 0 | — | 0 | 13 | — | .196 | .486 | 60 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1871 | 21 | RC1 | 3 | 1 | 0 | 1 | 0 | 13 | 1 | 3 | 3.46 | 122 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 1871 | 1B | 24 | 23 | 271 | 6 | 19 | 11 |
| 1871 | P | 3 | 1 | 1 | 2 | 0 | 0 |
| 1871 | OF | 1 | 0 | 1 | 0 | 0 | 0 |
| 1871 | SS | 1 | 1 | 1 | 2 | 1 | 0 |
| 1872 | 1B | 26 | 26 | 280 | 11 | 16 | 8 |
| 1872 | SS | 21 | 21 | 22 | 56 | 25 | 0 |
| 1873 | 1B | 42 | 0 | 429 | 8 | 29 | 20 |
| 1873 | OF | 5 | 0 | 3 | 1 | 1 | 0 |
| 1873 | SS | 3 | 0 | 2 | 12 | 2 | 0 |
| 1873 | 2B | 1 | 0 | 6 | 2 | 0 | 0 |
| 1874 | 1B | 56 | 56 | 488 | 8 | 55 | 31 |
| 1876 | SS | 41 | 0 | 42 | 114 | 20 | 6 |
| 1876 | 2B | 5 | 0 | 14 | 10 | 4 | 2 |
| 1876 | OF | 2 | 0 | 3 | 0 | 2 | 0 |
| 1880 | SS | 16 | 0 | 18 | 45 | 4 | 3 |
| 1880 | 2B | 1 | 0 | 1 | 1 | 0 | 0 |
| 1882 | SS | 49 | 0 | 51 | 161 | 24 | 9 |
| 1882 | 2B | 24 | 0 | 55 | 59 | 25 | 11 |
| 1882 | OF | 5 | 0 | 2 | 0 | 0 | 0 |
| 1883 | SS | 38 | 0 | 29 | 106 | 25 | 7 |
| 1883 | 1B | 25 | 0 | 226 | 10 | 9 | 11 |
| 1883 | 2B | 1 | 0 | 1 | 7 | 0 | 0 |
Team codes are the source codes (e.g. NYN for the New York Mets, BS1 for the 1875 Boston club). OPS+ is league-season normalized, not park-adjusted; unrecorded source values (such as RBI in the earliest recorded seasons) are absent, never zero-filled.
Denny Mack ranks on 1 all-time single-season position leaderboard (1871-2025, league-season-normalized OPS+ / ERA+).
| Rank | Board | Year | Stat |
|---|---|---|---|
| #169 | relief pitchers | 1871 | 122 ERA+ |
Every career total and season line is computed from the SABR / Sean Lahman baseball database (2025 edition, CC BY-SA 3.0), the same source behind our historical position leaderboards. Rate stats use league-season normalization only (OPS+ and ERA+ as marked, never park-adjusted); unrecorded early-era values stay absent rather than being invented. Career totals sum only what the source records.
Award winners and MVP / Cy Young / Rookie of the Year voting history come from the same database; the year pages live under MLB award voting history. Official transactions (2011 to the current season) come from the MLB StatsAPI feed on our transactions archive.