P · 12 seasons · 1928 – 1940 · B/T: L/L
One category carried Bob Weiland and the rest pulled him back: +5.9 from strikeouts, against a career total of +2.2. No season of his scores higher than 1938, at +7.5, 21st that season and 2621st of 51,303 player-seasons on record. Career value accumulated in strikeouts (+5.9), wins (+1.3) and ERA (+0.1), and drained away in WHIP (-3.4).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1928 | CWS | 1 | -2.38 | #520 | #93,696 |
| 1929 | CWS | 15 | -2.68 | #715 | #104,395 |
| 1930 | CWS | 14 | -2.62 | #657 | #103,195 |
| 1931★ | CWS | 15 | -2.07 | #414 | #59,946 |
| 1932 | BOS | 43 | -2.84 | #852 | #106,858 |
| 1933 | BOS | 39 | -3.30 | #659 | #110,287 |
| 1934 | CLE | 27 | -2.56 | #649 | #101,638 |
| 1935 | SLA | 14 | -2.61 | #601 | #102,907 |
| 1937 | STL | 41 | -2.22 | #671 | #79,342 |
| 1938 | STL | 35 | -3.23 | #827 | #110,005 |
| 1939 | STL | 32 | -3.36 | #814 | #110,475 |
| 1940 | STL | 1 | -2.12 | #520 | #67,995 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1928 | CWS | 1 | -1.59 | #163 | #27,309 |
| 1929 | CWS | 15 | -1.82 | #173 | #29,470 |
| 1930 | CWS | 14 | -3.02 | #236 | #45,381 |
| 1931 | CWS | 15 | -2.27 | #184 | #35,598 |
| 1932 | BOS | 43 | -1.91 | #209 | #30,465 |
| 1933 | BOS | 39 | 3.51 | #40 | #8,060 |
| 1934 | CLE | 27 | -0.90 | #120 | #22,822 |
| 1935 | SLA | 14 | -4.41 | #284 | #50,479 |
| 1937 | STL | 41 | 5.81 | #27 | #4,355 |
| 1938★ | STL | 35 | 7.52 | #21 | #2,621 |
| 1939 | STL | 32 | 3.83 | #47 | #7,456 |
| 1940 | STL | 1 | -2.51 | #278 | #39,265 |
★ Best season by Z