Isaac Mattson
P · 4 seasons · 2021 – 2026 · B/T: R/R
One category carried Isaac Mattson and the rest pulled him back: +0.2 from ERA, against a career total of -5.8. 2025 was the high-water mark, worth +1.3, 231st that season and 13717th of 51,303 player-seasons on record. On the credit side, ERA (+0.2). On the debit side, strikeouts (-2.0), saves (-1.1) and WHIP (-0.6).
Hitting
Best Season
-1.98
2021 · #50,746 all-time
Career Z
-6.0
summed
Avg / Season
-2.01
longevity-neutral
Seasons
3
★ Best season by Z
Pitching
Best Season
1.29
2025 · #13,717 all-time
Career Z
-5.8
summed
Avg / Season
-1.44
longevity-neutral
Seasons
4
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2021 | BAL | 4 | -2.36 | #705 | #37,063 |
| 2024 | PIT | 3 | -1.93 | #530 | #30,741 |
| 2025★ | PIT | 44 | 1.29 | #231 | #13,717 |
| 2026 | PIT | 38 | -2.75 | #737 | #42,585 |
★ Best season by Z