Jack O'Brien
Washington Senators 1899; Cleveland Blues 1901; Washington Senators 1901; Boston Americans 1903
Percentile snapshot
1901 season — qualified batters
of 93 qualified 1901 batters (min 427 PA) · 1 stat not shown: every qualified player held the same value, so a percentile there carries no information
Career, era-adjusted
sWAR measured against every career in history, 24,011 of them. Only era-adjusted career stats carry a percentile — a raw career total gets a rank instead, because pooling the 1890s with the 2020s is a choice, not a measurement.
Season by season
Batting
| Season | G | PA | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | CS | BA | OBP | SLG | OPS | wRC+ | OPS+ | wOBA | sWAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1899 | 127 | 516 | 468 | 68 | 132 | 11 | 5 | 6 | 51 | 31 | 32 | 17 | 0 | .282 | .331 | .365 | .696 | 90.3 | 90.6 | .334 | 0.5 |
| 1901 | 103 | 456 | 420 | 59 | 114 | 14 | 5 | 0 | 44 | 25 | 23 | 15 | 0 | .271 | .320 | .329 | .649 | 84.0 | 80.9 | .309 | 0.1 |
| 1903 | 96 | 376 | 338 | 44 | 71 | 14 | 4 | 3 | 38 | 21 | 37 | 10 | 0 | .210 | .262 | .302 | .564 | 67.4 | 67.1 | .266 | -0.1 |
Career totals
A total is called out only where it ranks in the all-time top 500; hover a figure for its rank and the size of the field it was ranked in. Ranks are absolute facts and carry no percentile — the population for "career home runs" would be an editorial choice, and the rank is not.
Best games
Batting
| Date | Game | AB | R | H | 2B | 3B | HR | RBI | BB | TB |
|---|---|---|---|---|---|---|---|---|---|---|
| 1903-09-05 | ATH @ BOS Gameday | 5 | 3 | 4 | 1 | 0 | 1 | 3 | 0 | 8 |
| 1903-07-29 | NYY @ BOS Gameday | 5 | 2 | 2 | 0 | 1 | 1 | 2 | 0 | 7 |
| 1903-06-08 | DET @ BOS Gameday | 2 | 1 | 2 | 1 | 0 | 1 | 3 | 0 | 6 |
| 1901-08-29 | MIN @ CLE Gameday | 6 | 3 | 4 | 1 | 0 | 0 | 0 | 0 | 5 |
| 1901-07-06 | BAL @ CLE Gameday | 4 | 3 | 4 | 0 | 0 | 0 | 2 | 1 | 4 |
Pitching
| Date | Game | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|
| 1901-04-26 | MIN @ ATH Gameday | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1901-04-27 | MIN @ ATH Gameday | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1901-04-29 | BAL @ MIN Gameday | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1901-04-30 | BAL @ MIN Gameday | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1901-05-01 | BAL @ MIN Gameday | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ranked from our own play-by-play game log, which begins in 1901 — not from the record book, so a career played outside it shows nothing here rather than a short list.