Rudy York
York launched 18 home runs in August 1937, a single-month record that stood for 61 years until Mark McGwire broke it during his chase for 70. That explosive power made the hulking first baseman one of the American League's most feared sluggers during baseball's pre-integration era.
The seven-time All-Star averaged nearly 19 home runs per season across his 15-year career, remarkable consistency for the late 1930s and 1940s when few players reached those totals. His 277 career homers ranked among the top sluggers of his generation, while his .275 average showed he could make contact despite swinging for the fences.
York's peak coincided with Detroit's championship runs, providing the power that complemented Hank Greenberg's production. That August 1937 remains his signature achievement — a month so dominant it defined what single-month power surges could look like, decades before anyone thought such records were breakable.
Career · Batting
13 seasons| Year | Team | G | AB | HR | RBI | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|
| 1934 | DET | 3 | 6 | 0 | 0 | .167 | — | — |
| 1937 | DET | 104 | 375 | 35 | 103 | .307 | — | — |
| 1938 | DET | 135 | 463 | 33 | 127 | .298 | — | — |
| 1939 | DET | 102 | 329 | 20 | 68 | .307 | — | — |
| 1940 | DET | 155 | 588 | 33 | 134 | .316 | — | — |
| 1941 | DET | 155 | 590 | 27 | 111 | .259 | — | — |
| 1942 | DET | 153 | 577 | 21 | 90 | .260 | — | — |
| 1943 | DET | 155 | 571 | 34 | 118 | .271 | — | — |
| 1944 | DET | 151 | 583 | 18 | 98 | .276 | — | — |
| 1945 | DET | 155 | 595 | 18 | 87 | .264 | — | — |
| 1946 | BOS | 154 | 579 | 17 | 119 | .276 | — | — |
| 1947 | CWS | 150 | 584 | 21 | 91 | .233 | — | — |
| 1948 | PHA | 31 | 51 | 0 | 6 | .157 | — | — |
| Career | 1603 | 5891 | 277 | 1152 | .275 | — | — | |
Matchups, projections, comps — grounded in Lahman, Retrosheet, and Statcast.