← Arizona Diamondbacks
Merrill Kelly
Arizona Diamondbacks
SP · #29 · Bats R · Throws R · 6'2" · 210 lb · Age 37 · 8 yrs in MLB
2026 grade
1.1
- Runs prevented
- −19.9
- IP · ERA
- 162.0 · 4.94
- K · BB
- 113 · 70
- Rank
- 46 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.
- Strikeouts113 vs 156 avg−11.6
- Home runs allowed28 vs 21 avg−9.3
- Walks68 vs 60 avg−2.5
- Contact allowed (how it turned out counts a quarter)485 vs 453 avg+1.6
- Hit batters4 vs 8 avg+1.4
- Parks pitched in+0.4
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 23@COL | W 5-3 | W | 5.1 | 4 | 2 | 2 | 1 | 2 | 0 | 78 | 85.0 |
| Wed, Sep 16vsMIA | L 3-4 | L | 4.2 | 7 | 4 | 3 | 2 | 9 | 1 | 91 | 22.8 |
| Fri, Sep 11vsTEX | W 9-1 | GS | 4.1 | 2 | 1 | 1 | 3 | 3 | 0 | 80 | 59.5 |
| Fri, Sep 4@HOU | L 1-3 | L | 6.0 | 7 | 3 | 3 | 0 | 4 | 1 | 94 | 51.5 |
| Sat, Aug 29@SF | W 7-1 | W | 7.0 | 2 | 0 | 0 | 4 | 7 | 0 | 100 | 92.5 |
| Mon, Aug 24vsCHC | L 0-7 | L | 5.2 | 5 | 3 | 3 | 3 | 4 | 0 | 99 | 47.2 |
| Tue, Aug 18@BOS | L 4-9 | L | 4.0 | 7 | 6 | 6 | 4 | 2 | 1 | 86 | 8.8 |
| Wed, Aug 12vsCOL | L 4-6 | L | 5.0 | 6 | 6 | 6 | 3 | 2 | 2 | 71 | 16.5 |
| Fri, Aug 7vsLAD | W 4-3 | GS | 5.2 | 2 | 1 | 1 | 4 | 4 | 0 | 80 | 79.4 |
| Sun, Aug 2@CLE | L 0-5 | L | 5.0 | 8 | 5 | 5 | 4 | 5 | 1 | 96 | 8.6 |
| Mon, Jul 27@PIT | L 2-3 | GS | 5.2 | 4 | 1 | 0 | 1 | 6 | 0 | 93 | 79.3 |
| Wed, Jul 22vsATH | W 15-5 | W | 5.0 | 5 | 2 | 2 | 1 | 3 | 1 | 87 | 39.2 |
| Fri, Jul 17vsSTL | L 4-5 | GS | 5.0 | 4 | 3 | 1 | 2 | 3 | 1 | 87 | 57.2 |
| Thu, Jul 9@SD | W 3-1 | W | 7.0 | 3 | 1 | 1 | 3 | 6 | 1 | 94 | 73.7 |
| Sat, Jul 4vsMIL | W 4-3 | W | 5.0 | 8 | 2 | 2 | 2 | 6 | 1 | 92 | 14.2 |
| Sun, Jun 28@TB | L 1-5 | L | 6.0 | 8 | 5 | 5 | 2 | 3 | 3 | 93 | 9.8 |
| Mon, Jun 22@STL | L 2-3 | L | 6.0 | 7 | 3 | 3 | 3 | 2 | 0 | 96 | 45.1 |
| Tue, Jun 16vsLAA | L 0-7 | L | 5.1 | 11 | 6 | 6 | 1 | 4 | 2 | 88 | 2.0 |
| Thu, Jun 11@MIA | L 0-2 | L | 6.0 | 4 | 2 | 2 | 2 | 1 | 0 | 74 | 83.7 |
| Fri, Jun 5vsWSH | L 1-14 | L | 5.0 | 6 | 7 | 7 | 3 | 4 | 3 | 85 | 5.9 |
| Sun, May 31@SEA | L 2-3 | GS | 5.1 | 8 | 2 | 2 | 2 | 2 | 2 | 97 | 7.5 |
| Mon, May 25@SF | W 6-2 | W | 7.0 | 4 | 2 | 2 | 2 | 4 | 0 | 96 | 78.3 |
| Wed, May 20vsSF | W 6-3 | W | 6.0 | 8 | 3 | 3 | 0 | 4 | 1 | 85 | 36.2 |
| Fri, May 15@COL | W 9-1 | W | 9.0 | 4 | 1 | 1 | 0 | 3 | 1 | 100 | 98.7 |
| Sat, May 9vsNYM | W 2-1 | W | 7.0 | 3 | 1 | 1 | 3 | 6 | 0 | 96 | 90.5 |
| Sun, May 3@CHC | L 4-8 | L | 4.1 | 8 | 6 | 6 | 3 | 5 | 1 | 92 | 4.9 |
| Tue, Apr 28@MIL | L 2-13 | L | 5.0 | 6 | 5 | 5 | 5 | 1 | 1 | 104 | 16.1 |
| Tue, Apr 21vsCHW | L 5-11 | L | 4.1 | 10 | 8 | 8 | 3 | 5 | 3 | 101 | 0.3 |
| Tue, Apr 14@BAL | W 4-3 | W | 5.1 | 5 | 2 | 2 | 4 | 3 | 1 | 86 | 25.6 |
2026 game log: hitting
Game grades need 3 plate appearances.
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.