P · 10 seasons · 1934 – 1946 · B/T: R/R
Few careers score higher: Leon Day sits 1st of 0 pitchers all-time in roto value, built over 10 seasons. The peak came in 1946, +7.2, 21st that season and 2924th of 51,303 player-seasons on record. The value came from WHIP (+4.7), strikeouts (+4.4) and wins (+2.0), with no category working against him.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1934 | BBS | 3 | -2.18 | #482 | #74,826 |
| 1935 | BE | 18 | -2.32 | #451 | #89,950 |
| 1936 | NE | 16 | -1.56 | #273 | #42,747 |
| 1937 | NE | 9 | -1.32 | #325 | #39,897 |
| 1938 | NE | 2 | -2.11 | #551 | #65,406 |
| 1939 | NE | 22 | -1.02 | #279 | #37,185 |
| 1941★ | NE | 52 | 2.99 | #129 | #18,997 |
| 1942 | NE | 46 | 2.30 | #145 | #21,111 |
| 1943 | NE | 30 | -0.34 | #254 | #32,430 |
| 1946 | NE | 24 | 0.33 | #232 | #28,789 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1934 | BBS | 2 | -3.32 | #264 | #47,447 |
| 1935 | BE | 17 | 2.34 | #63 | #10,642 |
| 1936 | NE | 12 | 0.59 | #86 | #16,086 |
| 1937 | NE | 6 | -0.54 | #130 | #20,946 |
| 1938 | NE | 2 | -1.42 | #166 | #26,052 |
| 1939 | NE | 18 | 1.81 | #80 | #12,128 |
| 1941 | NE | 6 | -1.80 | #189 | #29,274 |
| 1942 | NE | 12 | 6.03 | #25 | #4,092 |
| 1943 | NE | 10 | -0.71 | #136 | #21,764 |
| 1946★ | NE | 15 | 7.17 | #21 | #2,924 |
★ Best season by Z