← Seattle Mariners
Cooper Criswell
Seattle Mariners
RP · #88 · Bats R · Throws R · 6'6" · 200 lb · Age 30 · 6 yrs in MLB
2026 grade
40.2
- Runs prevented
- +1.1
- IP · ERA
- 40.2 · 3.32
- K · BB
- 31 · 16
- Rank
- 123 of 205 relievers
What the grade is made of
Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.
- Home runs allowed3 vs 5 avg+2.9
- Strikeouts31 vs 37 avg−1.7
- Parks pitched in−0.8
- Walks13 vs 14 avg+0.5
- Hit batters1 vs 2 avg+0.3
- Contact allowed (how it turned out counts a quarter)119 vs 108 avg−0.1
2026 game log: pitching
Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.
| Game | Result | Dec | IP | H | R | ER | BB | K | HR | PC | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sun, Sep 27vsLAA | W 7-3 | 1.0 | 1 | 0 | 0 | 1 | 0 | 0 | 12 | 37.8 | |
| Thu, Sep 24vsLAA | L 4-6 | 1.0 | 1 | 1 | 1 | 2 | 0 | 0 | 22 | 28.1 | |
| Wed, Sep 23vsHOU | W 6-5 | W | 1.0 | 1 | 1 | 0 | 0 | 1 | 0 | 15 | 30.5 |
| Sat, Sep 19@COL | L 3-5 | 0.1 | 1 | 0 | 0 | 2 | 0 | 0 | 19 | 17.4 | |
| Wed, Sep 16@LAA | W 7-2 | 1.2 | 1 | 0 | 0 | 0 | 1 | 0 | 22 | 89.6 | |
| Mon, Sep 14@LAA | L 4-6 | 0.2 | 2 | 1 | 1 | 1 | 2 | 0 | 24 | 18.4 | |
| Sat, Sep 12@ATH | W 19-1 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 87.4 | |
| Tue, Sep 8vsTEX | L 5-10 | 1.0 | 3 | 1 | 1 | 0 | 2 | 0 | 19 | 19.4 | |
| Fri, Sep 4vsATH | L 6-7 | 1.0 | 2 | 0 | 0 | 0 | 0 | 0 | 21 | 34.0 | |
| Wed, Sep 2@BOS | W 8-3 | W | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | 87.3 |
| Mon, Aug 31@BOS | L 8-9 | L | 0.1 | 1 | 1 | 0 | 2 | 0 | 0 | 7 | 26.0 |
| Mon, Jun 8@BAL | W 6-3 | 1.1 | 1 | 1 | 1 | 1 | 0 | 0 | 19 | 51.9 | |
| Sun, Jun 7@DET | L 4-5 | 0.0 | 3 | 2 | 2 | 0 | 0 | 0 | 13 | 3.9 | |
| Wed, Jun 3vsNYM | L 1-7 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 12 | 52.7 | |
| Tue, Jun 2vsNYM | W 8-3 | 2.0 | 0 | 0 | 0 | 1 | 3 | 0 | 23 | 95.2 | |
| Sat, May 30vsARI | W 5-1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 20 | 52.7 | |
| Fri, May 29vsARI | W 7-6 | W | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 70.7 |
| Wed, May 27@ATH | W 9-1 | 2.0 | 2 | 1 | 1 | 1 | 1 | 0 | 26 | 41.5 | |
| Sun, May 24@KC | L 6-8 | 2.0 | 3 | 2 | 2 | 0 | 0 | 0 | 25 | 15.2 | |
| Wed, May 20vsCHW | W 5-4 | 1.0 | 2 | 0 | 0 | 0 | 1 | 0 | 17 | 18.3 | |
| Sun, May 17vsSD | L 3-8 | 0.1 | 1 | 1 | 1 | 1 | 1 | 0 | 19 | 23.4 | |
| Fri, May 15vsSD | L 0-2 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 13 | 33.7 | |
| Wed, May 13@HOU | L 3-4 | B | 0.2 | 1 | 0 | 0 | 1 | 0 | 0 | 17 | 31.1 |
| Mon, May 11@HOU | W 3-1 | H | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | 74.1 |
| Wed, May 6vsATL | W 3-1 | H | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | 70.7 |
| Sat, May 2vsKC | L 2-3 | L | 1.0 | 0 | 1 | 0 | 0 | 1 | 0 | 14 | 70.7 |
| Wed, Apr 29@MIN | W 5-3 | W | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | – |
| Tue, Apr 28@MIN | W 7-1 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | 88.5 | |
| Sat, Apr 25@STL | W 11-9 | 2.0 | 3 | 2 | 2 | 0 | 3 | 1 | 36 | 8.4 | |
| Wed, Apr 22vsATH | W 5-4 | H | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | 70.7 |
| Mon, Apr 20vsATH | L 4-6 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 9 | 52.7 | |
| Thu, Apr 16@SD | L 2-5 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 16 | 54.0 | |
| Sun, Apr 12vsHOU | W 6-1 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 9 | 41.2 | |
| Mon, Apr 6@TEX | L 1-2 | 1.0 | 1 | 0 | 0 | 2 | 0 | 0 | 23 | 31.1 | |
| Wed, Apr 1vsNYY | L 3-5 | 2.0 | 1 | 1 | 1 | 0 | 1 | 1 | 30 | 47.4 | |
| Sun, Mar 29vsCLE | W 8-0 | S | 3.0 | 2 | 0 | 0 | 0 | 5 | 0 | 44 | 92.6 |
| Thu, Mar 26vsCLE | L 4-6 | 1.0 | 1 | 1 | 1 | 1 | 1 | 1 | 17 | 10.4 |
Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.