| 20-Win Season(s) | Player |
|---|
| 1972, CHW (21) | |
| 1948, CLE (20) | |
| 1942, STL (21) | |
| 1969, MIN (20) | |
| 1960, STL (21) | |
| 1973, SFG (24) | |
| 1933, CHC (20) | |
| 1978, MIL (22) | |
| 1933, BSN (20) | |
| 1965, MLN (24) | |
| 1978, NYY (20) | |
| 1977, STL (20) | |
| 1976, BAL (20) | |
| 1977, MIN (20) | |
| 1991, DET (20) | |
| 1939, BRO (20) | |
| | 20-Win Season(s) | Player |
|---|
| 1969, CHC (20) | |
| 1998, TEX (20) | |
| 2011, ARZ (21) | |
| 1949, BOS (23) | |
| 1977,78,80, KCR (20,21,20) | |
| 2016, BOS (22) | |
| 1964, STL (20) | |
| 1973, KCR (20) | |
| 1993, SFG (21) | |
| 1975, BAL (20) | |
| 1985, STL (21) | |
| 2021, LAD (20) | |
| 1933, WSA (22) | |
| 1967, DET (22) | |
| 1945, WSA (20) | |
|
