← Seattle Mariners
George Kirby
Seattle Mariners
SP · #68 · Bats R · Throws R · 6'4" · 215 lb · Age 28 · 5 yrs in MLB
2026 grade
16.3
- Runs prevented
- −3.1
- IP · ERA
- 174.2 · 4.33
- K · BB
- 148 · 47
- Rank
- 39 of 46 starters
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.
- Walks46 vs 64 avg+5.8
- Strikeouts148 vs 165 avg−4.6
- Parks pitched in−3.8
- Contact allowed (how it turned out counts a quarter)520 vs 479 avg−3.2
- Hit batters3 vs 9 avg+1.9
- Home runs allowed22 vs 23 avg+0.8
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wed, Sep 23vsHOU | W 6-5 | GS | 5.0 | 6 | 4 | 4 | 3 | 5 | 1 | 96 | 14.8 |
| Wed, Sep 16@LAA | W 7-2 | GS | 4.1 | 5 | 2 | 2 | 5 | 5 | 0 | 93 | 36.5 |
| Fri, Sep 11@ATH | L 5-6 | GS | 6.0 | 9 | 4 | 4 | 2 | 5 | 1 | 101 | 21.4 |
| Sat, Sep 5vsATH | L 2-6 | L | 6.2 | 7 | 4 | 3 | 1 | 5 | 1 | 100 | 39.7 |
| Mon, Aug 31@BOS | L 8-9 | GS | 5.0 | 7 | 5 | 5 | 2 | 2 | 2 | 86 | 8.6 |
| Tue, Aug 25vsPHI | W 4-1 | W | 7.2 | 6 | 1 | 1 | 1 | 9 | 0 | 92 | 90.2 |
| Thu, Aug 20@MIL | L 4-7 | L | 3.1 | 9 | 6 | 6 | 2 | 3 | 0 | 84 | 4.1 |
| Fri, Aug 14@HOU | L 7-10 | GS | 4.2 | 8 | 5 | 5 | 3 | 2 | 1 | 99 | 11.6 |
| Sat, Aug 8vsTB | L 2-3 | GS | 5.0 | 4 | 1 | 1 | 2 | 2 | 1 | 99 | 42.2 |
| Sun, Aug 2vsMIN | W 7-6 | GS | 7.0 | 5 | 0 | 0 | 1 | 3 | 0 | 94 | 87.5 |
| Mon, Jul 27@TEX | L 3-7 | L | 4.0 | 7 | 7 | 7 | 0 | 3 | 4 | 66 | 1.4 |
| Mon, Jul 20vsCIN | W 8-0 | W | 6.0 | 3 | 0 | 0 | 1 | 6 | 0 | 80 | 89.9 |
| Wed, Jul 8@MIA | L 0-2 | L | 6.0 | 8 | 2 | 2 | 0 | 7 | 1 | 86 | 18.2 |
| Mon, Jun 29vsLAA | W 6-2 | W | 8.0 | 7 | 2 | 2 | 1 | 7 | 1 | 100 | 48.8 |
| Tue, Jun 23@PIT | W 3-2 | W | 6.0 | 9 | 2 | 1 | 2 | 5 | 0 | 91 | 38.3 |
| Wed, Jun 17vsBAL | L 3-5 | L | 6.0 | 8 | 3 | 3 | 0 | 5 | 1 | 92 | 28.7 |
| Wed, Jun 10@BAL | L 2-7 | L | 6.0 | 7 | 3 | 3 | 3 | 10 | 1 | 104 | 20.0 |
| Wed, Jun 3vsNYM | L 1-7 | L | 4.0 | 9 | 5 | 4 | 1 | 5 | 0 | 89 | 19.4 |
| Fri, May 29vsARI | W 7-6 | GS | 5.1 | 6 | 4 | 4 | 1 | 4 | 1 | 87 | 25.5 |
| Sat, May 23@KC | L 0-5 | L | 6.0 | 9 | 5 | 3 | 0 | 3 | 0 | 92 | 51.3 |
| Sun, May 17vsSD | L 3-8 | L | 5.2 | 6 | 6 | 6 | 2 | 6 | 2 | 98 | 13.8 |
| Mon, May 11@HOU | W 3-1 | W | 5.0 | 7 | 1 | 1 | 2 | 7 | 0 | 99 | 40.7 |
| Tue, May 5vsATL | L 2-3 | GS | 7.0 | 5 | 2 | 2 | 1 | 5 | 0 | 88 | 84.2 |
| Wed, Apr 29@MIN | W 5-3 | GS | 5.2 | 8 | 2 | 2 | 2 | 5 | 0 | 97 | 34.7 |
| Fri, Apr 24@STL | W 3-2 | W | 6.0 | 5 | 2 | 2 | 1 | 2 | 0 | 81 | 70.2 |
| Sat, Apr 18vsTEX | W 7-3 | W | 5.2 | 7 | 1 | 1 | 2 | 5 | 1 | 96 | 28.9 |
| Mon, Apr 13vsHOU | W 6-2 | W | 7.2 | 7 | 2 | 2 | 1 | 6 | 0 | 99 | 77.6 |
| Tue, Apr 7@TEX | L 2-3 | L | 8.0 | 6 | 3 | 3 | 0 | 4 | 1 | 90 | 83.2 |
| Wed, Apr 1vsNYY | L 3-5 | L | 6.0 | 5 | 4 | 4 | 3 | 6 | 1 | 89 | 36.1 |
| Fri, Mar 27vsCLE | W 5-1 | W | 6.0 | 2 | 1 | 1 | 2 | 6 | 1 | 90 | 74.3 |
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.