George Sisler
The switch-hitting first baseman who could also toe the rubber holds baseball's most unbreakable single-season record — 257 hits in 1920, a mark that's survived over a century of evolution. Sisler's .340 career average speaks to pure hitting ability, but that pitching line reveals something special: a 2.35 ERA across 111 innings with a peak ERA+ of 278 suggests he could have been elite on the mound if he'd chosen that path.
What made Sisler transcendent was his combination of contact hitting and speed, rare for first basemen of any era. His 1922 MVP season capped a dominant stretch where he hit .420 and .371 in consecutive years. The fact that he maintained that .340 career mark while playing 15 seasons shows remarkable consistency — this wasn't a player who flamed out after a few brilliant years, but one who sustained excellence across baseball's dead-ball and live-ball transitions.
Career · Batting
15 seasons| Year | Team | G | AB | HR | RBI | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|
| 1915 | SLA | 81 | 274 | 3 | 29 | .285 | — | — |
| 1916 | SLA | 151 | 580 | 4 | 76 | .305 | — | — |
| 1917 | SLA | 135 | 539 | 2 | 52 | .353 | — | — |
| 1918 | SLA | 114 | 452 | 2 | 41 | .341 | — | — |
| 1919 | SLA | 132 | 511 | 10 | 83 | .352 | — | — |
| 1920 | SLA | 154 | 631 | 19 | 122 | .407 | — | — |
| 1921 | SLA | 138 | 582 | 12 | 104 | .371 | — | — |
| 1922 | SLA | 142 | 586 | 8 | 105 | .420 | — | — |
| 1924 | SLA | 151 | 636 | 9 | 74 | .305 | — | — |
| 1925 | SLA | 150 | 649 | 12 | 105 | .345 | — | — |
| 1926 | SLA | 150 | 613 | 7 | 71 | .290 | — | — |
| 1927 | SLA | 149 | 614 | 5 | 97 | .327 | — | — |
| 1928 | BSN | 138 | 540 | 4 | 70 | .331 | — | — |
| 1929 | BSN | 154 | 629 | 2 | 79 | .326 | — | — |
| 1930 | BSN | 116 | 431 | 3 | 67 | .309 | — | — |
| Career | 2055 | 8267 | 102 | 1175 | .340 | — | — | |
Career · Pitching
7 seasons| Year | Team | G | IP | W | L | ERA | ERA+ | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|
| 1915 | SLA | 15 | 70.0 | 4 | 4 | 2.83 | 102 | 41 | 1.429 |
| 1916 | SLA | 3 | 27.0 | 1 | 2 | 1.00 | 278 | 12 | 0.889 |
| 1918 | SLA | 2 | 8.0 | 0 | 0 | 4.50 | 63 | 4 | 1.750 |
| 1920 | SLA | 1 | 1.0 | 0 | 0 | 0.00 | — | 2 | 0.000 |
| 1925 | SLA | 1 | 2.0 | 0 | 0 | 0.00 | — | 1 | 1.000 |
| 1926 | SLA | 1 | 2.0 | 0 | 0 | 0.00 | — | 3 | 1.000 |
| 1928 | BSN | 1 | 1.0 | 0 | 0 | 0.00 | — | 0 | 1.000 |
| Career | 24 | 111.0 | 5 | 6 | — | — | 63 | — | |
Matchups, projections, comps — grounded in Lahman, Retrosheet, and Statcast.