P · 10 seasons · 1991 – 2000 · B/T: R/R
One category carried Heathcliff Slocumb and the rest pulled him back: +11.4 from saves, against a career total of +5.6. No season of his scores higher than 1995, at +6.2, 38th that season and 3891st of 51,303 player-seasons on record. On the credit side, saves (+11.4) and ERA (+2.2). On the debit side, WHIP (-5.3).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1991 | CHC | 52 | -2.18 | #793 | #74,732 |
| 1992 | CHC | 30 | -2.32 | #861 | #89,885 |
| 1993 | CLE | 30 | -2.21 | #854 | #78,489 |
| 1994 | PHI | 52 | -2.18 | #478 | #74,714 |
| 1995 | PHI | 61 | -2.17 | #877 | #74,353 |
| 1996★ | BOS | 75 | -2.12 | #560 | #66,683 |
| 1997 | BOS | 76 | -2.16 | #573 | #73,606 |
| 1998 | SEA | 57 | -2.13 | #590 | #69,621 |
| 1999 | STL | 50 | -2.15 | #602 | #71,823 |
| 2000 | STL | 66 | -2.18 | #906 | #75,435 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1991 | CHC | 52 | -0.71 | #198 | #21,763 |
| 1992 | CHC | 30 | -4.11 | #431 | #50,056 |
| 1993 | CLE | 30 | -1.09 | #248 | #23,921 |
| 1994 | PHI | 52 | 1.80 | #119 | #12,154 |
| 1995★ | PHI | 61 | 6.22 | #38 | #3,891 |
| 1996 | BOS | 75 | 5.96 | #44 | #4,177 |
| 1997 | BOS | 76 | 0.97 | #150 | #14,758 |
| 1998 | SEA | 57 | -2.16 | #370 | #33,994 |
| 1999 | STL | 50 | -0.23 | #218 | #19,445 |
| 2000 | STL | 65 | -1.11 | #295 | #24,026 |
★ Best season by Z