P · 7 seasons · 1973 – 1980 · B/T: R/R
John Montague is the extreme version of a specialist. +1.3 of roto value came from saves, yet his career total is only -12.1. 1977 was the high-water mark, worth +0.2, 133rd that season and 17510th of 51,303 player-seasons on record. On the credit side, saves (+1.3). On the debit side, ERA (-4.6), WHIP (-3.7) and strikeouts (-2.5).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1973 | MON | 4 | -2.34 | #630 | #91,649 |
| 1974 | MON | 46 | -2.44 | #762 | #96,932 |
| 1975 | MON | 16 | -2.35 | #660 | #91,890 |
| 1977 | SEA | 47 | -2.33 | #487 | #90,477 |
| 1978★ | SEA | 19 | -2.28 | #483 | #85,322 |
| 1979 | SEA | 55 | -2.29 | #466 | #87,119 |
| 1980 | CAL | 37 | -2.29 | #501 | #86,710 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1973 | MON | 4 | -2.37 | #227 | #37,275 |
| 1974 | MON | 46 | 0.11 | #121 | #17,944 |
| 1975 | MON | 15 | -2.91 | #286 | #44,340 |
| 1977★ | SEA | 47 | 0.21 | #133 | #17,510 |
| 1978 | SEA | 19 | -3.59 | #351 | #48,791 |
| 1979 | SEA | 55 | -0.88 | #185 | #22,680 |
| 1980 | CAL | 37 | -2.71 | #282 | #42,085 |
★ Best season by Z