P · 16 seasons · 1933 – 1948 · B/T: L/L
Thornton Lee ranks 1st of 0 pitchers by career roto value, one of the highest totals the site records. The peak came in 1941, +15.1, 2nd that season and 181st of 51,303 player-seasons on record. The value came from strikeouts (+12.2), ERA (+11.6) and wins (+9.3), with no category working against him.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1933 | CLE | 3 | -1.98 | #333 | #51,404 |
| 1934 | CLE | 24 | -2.51 | #640 | #99,824 |
| 1935 | CLE | 32 | -2.49 | #562 | #99,300 |
| 1936 | CLE | 43 | -2.82 | #640 | #106,617 |
| 1937 | CWS | 30 | -2.27 | #708 | #84,958 |
| 1938★ | CWS | 34 | -0.44 | #246 | #33,027 |
| 1939 | CWS | 33 | -2.98 | #800 | #108,385 |
| 1940 | CWS | 28 | -1.59 | #340 | #43,198 |
| 1941 | CWS | 35 | -1.60 | #346 | #43,272 |
| 1942 | CWS | 11 | -2.26 | #632 | #84,279 |
| 1943 | CWS | 19 | -2.88 | #812 | #107,459 |
| 1944 | CWS | 15 | -2.70 | #824 | #104,849 |
| 1945 | CWS | 29 | -2.41 | #787 | #95,465 |
| 1946 | CWS | 7 | -1.82 | #477 | #46,985 |
| 1947 | CWS | 21 | -2.25 | #694 | #82,018 |
| 1948 | NY1 | 11 | -2.24 | #707 | #81,306 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1933 | CLE | 3 | -2.13 | #166 | #33,575 |
| 1934 | CLE | 24 | -2.59 | #226 | #40,441 |
| 1935 | CLE | 32 | 2.93 | #54 | #9,220 |
| 1936 | CLE | 43 | 0.44 | #89 | #16,614 |
| 1937 | CWS | 30 | 5.15 | #39 | #5,241 |
| 1938 | CWS | 33 | 5.83 | #36 | #4,325 |
| 1939 | CWS | 33 | 5.28 | #33 | #5,055 |
| 1940 | CWS | 28 | 6.25 | #29 | #3,865 |
| 1941★ | CWS | 35 | 15.06 | #2 | #181 |
| 1942 | CWS | 11 | -1.60 | #165 | #27,405 |
| 1943 | CWS | 19 | -1.57 | #162 | #27,190 |
| 1944 | CWS | 15 | 1.61 | #77 | #12,733 |
| 1945 | CWS | 29 | 9.08 | #17 | #1,587 |
| 1946 | CWS | 7 | -1.15 | #174 | #24,275 |
| 1947 | CWS | 21 | -1.04 | #158 | #23,658 |
| 1948 | NY1 | 11 | -1.91 | #188 | #30,517 |
★ Best season by Z