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John Cassidy played 11 major-league seasons (1875-1885) as a OF (571), P (32), 1B (23), 3B (17), 2B (4). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 11 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1875 | 20 | BR2|NH1 | 47 | 188 | 17 | 32 | 1 | 7 | 0 | 0 | 5 | .170 | .399 | 39 |
| 1876 | 21 | HAR | 12 | 47 | 6 | 13 | 0 | 8 | 0 | 1 | 0 | .277 | .611 | 105 |
| 1877 | 22 | HAR | 60 | 251 | 43 | 95 | 0 | 27 | 0 | 3 | 3 | .378 | .844 | 169 |
| 1878 | 23 | CHN | 60 | 256 | 33 | 68 | 0 | 29 | 0 | 9 | 11 | .266 | .591 | 99 |
| 1879 | 24 | TRN | 9 | 37 | 4 | 7 | 0 | 1 | 0 | 2 | 4 | .189 | .447 | 51 |
| 1880 | 25 | TRN | 83 | 352 | 40 | 89 | 0 | 29 | 0 | 12 | 34 | .253 | .616 | 110 |
| 1881 | 26 | TRN | 85 | 370 | 57 | 82 | 1 | 11 | 0 | 18 | 21 | .222 | .539 | 72 |
| 1882 | 27 | TRN | 29 | 121 | 14 | 21 | 0 | 9 | 0 | 3 | 16 | .174 | .408 | 32 |
| 1883 | 28 | PRO | 89 | 366 | 46 | 87 | 0 | 42 | 0 | 9 | 38 | .238 | .565 | 74 |
| 1884 | 29 | BR3 | 106 | 433 | 57 | 109 | 2 | — | 0 | 19 | — | .252 | .605 | 101 |
| 1885 | 30 | BR3 | 54 | 221 | 36 | 47 | 1 | 28 | 0 | 8 | — | .213 | .521 | 68 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1875 | 20 | BR2 | 30 | 22 | 1 | 21 | 0 | 213.2 | 9 | 11 | 3.03 | 73 |
| 1877 | 22 | HAR | 2 | 2 | 1 | 1 | 0 | 18 | 2 | 1 | 5.00 | 56 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 1875 | P | 30 | 0 | 19 | 49 | 19 | 1 |
| 1875 | 1B | 16 | 0 | 181 | 2 | 10 | 6 |
| 1875 | OF | 12 | 0 | 4 | 1 | 5 | 1 |
| 1875 | 2B | 2 | 0 | 2 | 3 | 0 | 0 |
| 1876 | OF | 8 | 0 | 7 | 2 | 0 | 0 |
| 1876 | 1B | 4 | 0 | 34 | 2 | 2 | 3 |
| 1877 | OF | 58 | 0 | 41 | 16 | 22 | 2 |
| 1877 | P | 2 | 0 | 1 | 2 | 1 | 0 |
| 1878 | OF | 60 | 0 | 89 | 30 | 28 | 6 |
| 1878 | C | 1 | 0 | 2 | 1 | 0 | 0 |
| 1879 | OF | 8 | 0 | 7 | 1 | 1 | 0 |
| 1879 | 1B | 2 | 0 | 17 | 1 | 3 | 2 |
| 1880 | OF | 82 | 0 | 128 | 18 | 20 | 1 |
| 1880 | 2B | 1 | 0 | 2 | 0 | 2 | 0 |
| 1881 | OF | 84 | 0 | 143 | 20 | 24 | 0 |
| 1881 | SS | 1 | 0 | 1 | 4 | 1 | 1 |
| 1882 | OF | 16 | 0 | 19 | 2 | 6 | 1 |
| 1882 | 3B | 13 | 0 | 16 | 21 | 19 | 0 |
| 1883 | OF | 88 | 0 | 120 | 26 | 23 | 2 |
| 1883 | 1B | 1 | 0 | 11 | 1 | 2 | 0 |
| 1883 | 2B | 1 | 0 | 1 | 2 | 1 | 0 |
| 1884 | OF | 101 | 0 | 125 | 25 | 27 | 5 |
| 1884 | 3B | 4 | 0 | 5 | 5 | 5 | 0 |
| 1884 | SS | 1 | 0 | 1 | 1 | 2 | 0 |
| 1885 | OF | 54 | 0 | 62 | 7 | 12 | 3 |
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.
John Cassidy ranks on 1 all-time single-season position leaderboard (1871-2025, league-season-normalized OPS+ / ERA+).
| Rank | Board | Year | Stat |
|---|---|---|---|
| #125 | right fielders | 1877 | 169 OPS+ |
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.