← Seattle Mariners
Michael Rucker
Seattle Mariners
RP · #38 · Bats R · Throws R · 6'1" · 195 lb · Age 32 · 4 yrs in MLB
2026 grade
32.9
- Runs prevented
- +0.5
- IP · ERA
- 43.2 · 5.56
- K · BB
- 50 · 17
- Rank
- 138 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.
- Strikeouts50 vs 41 avg+2.4
- Parks pitched in−0.8
- Home runs allowed6 vs 6 avg−0.5
- Contact allowed (how it turned out counts a quarter)110 vs 120 avg−0.4
- Walks17 vs 16 avg−0.3
- Hit batters2 vs 2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat, Sep 26vsLAA | W 8-4 | 1.2 | 1 | 0 | 0 | 1 | 3 | 0 | 33 | 61.5 | |
| Thu, Sep 24vsLAA | L 4-6 | 1.2 | 0 | 0 | 0 | 1 | 2 | 0 | 21 | 90.8 | |
| Tue, Sep 22vsHOU | L 0-7 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 17 | 49.0 | |
| Mon, Sep 14@LAA | L 4-6 | 2.0 | 0 | 0 | 0 | 1 | 0 | 0 | 26 | 91.4 | |
| Sat, Sep 12@ATH | W 19-1 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 20 | 59.3 | |
| Tue, Sep 8vsTEX | L 5-10 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 14 | 70.7 | |
| Sat, Sep 5vsATH | L 2-6 | 1.1 | 2 | 2 | 2 | 0 | 2 | 1 | 20 | 16.1 | |
| Wed, Sep 2@BOS | W 8-3 | 2.0 | 4 | 2 | 2 | 0 | 1 | 1 | 36 | 3.6 | |
| Fri, Aug 28@TOR | L 1-8 | 2.0 | 2 | 2 | 2 | 1 | 2 | 0 | 45 | 67.4 | |
| Sun, Aug 23vsCHC | L 2-19 | 0.2 | 4 | 7 | 7 | 2 | 1 | 1 | 33 | 0.6 | |
| Sat, Aug 22vsCHC | W 5-4 | W | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 14 | 70.7 |
| Thu, Aug 20@MIL | L 4-7 | 2.2 | 0 | 0 | 0 | 1 | 4 | 0 | 40 | 99.0 | |
| Fri, Aug 14@HOU | L 7-10 | 1.1 | 0 | 0 | 0 | 0 | 1 | 0 | 16 | 92.8 | |
| Tue, Aug 11@NYY | L 1-4 | L | 0.1 | 3 | 4 | 4 | 1 | 1 | 0 | 25 | 5.1 |
| Sun, Aug 9vsTB | L 1-4 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | – | |
| Sat, Aug 8vsTB | L 2-3 | L | 1.0 | 2 | 2 | 0 | 1 | 1 | 0 | 29 | 30.6 |
| Thu, Aug 6vsDET | L 0-11 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 14 | 71.4 | |
| Tue, Aug 4vsDET | L 0-8 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 12 | 49.0 | |
| Fri, Jul 31vsMIN | L 3-5 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | 71.4 | |
| Wed, Jul 29@LAD | L 2-4 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 23 | 26.4 | |
| Mon, Jul 27@TEX | L 3-7 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 13 | 54.6 | |
| Fri, Jul 24@TEX | L 4-5 | 2.0 | 2 | 0 | 0 | 0 | 3 | 0 | 28 | 68.8 | |
| Tue, Jul 21vsCIN | L 2-4 | 1.0 | 1 | 1 | 1 | 0 | 1 | 1 | 11 | 20.8 | |
| Mon, Jul 20vsCIN | W 8-0 | 1.0 | 0 | 0 | 0 | 0 | 3 | 0 | 12 | 71.4 | |
| Fri, Jul 17vsSF | L 0-7 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 20 | 53.1 | |
| Sun, Jul 12@TB | W 8-2 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 21 | 64.5 | |
| Sat, Jul 11@TB | L 1-6 | 1.0 | 2 | 1 | 0 | 0 | 0 | 0 | 13 | 35.7 | |
| Thu, Jul 9@MIA | L 4-8 | 2.0 | 3 | 2 | 2 | 0 | 1 | 0 | 29 | 37.4 | |
| Tue, Jul 7@MIA | L 5-6 | L | 0.1 | 1 | 1 | 0 | 1 | 0 | 0 | 10 | 24.8 |
| Fri, Jul 3vsTOR | L 0-2 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 24 | 53.1 | |
| Tue, Jun 30vsLAA | W 8-3 | 1.0 | 0 | 0 | 0 | 1 | 0 | 0 | 12 | 49.0 | |
| Sun, Jun 28@CLE | L 5-6 | L | 0.1 | 2 | 4 | 4 | 2 | 0 | 0 | 21 | 6.2 |
| Wed, Jun 24@PIT | L 1-11 | 2.0 | 2 | 0 | 0 | 0 | 3 | 0 | 26 | 69.1 | |
| Sat, Jun 20vsBOS | L 1-5 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 15 | 60.9 | |
| Wed, Jun 17vsBAL | L 3-5 | 1.0 | 1 | 1 | 1 | 1 | 3 | 1 | 27 | 14.2 | |
| Sun, Jun 14@WSH | L 1-10 | 1.0 | 1 | 1 | 1 | 0 | 2 | 1 | 13 | 22.5 | |
| Fri, Jun 12@WSH | W 10-2 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | 81.7 |
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.