Arizona Diamondbacks· #29· Pitcher
Merrill Kelly “Mert”
Bats R · Throws R·Age 38 (Oct 14, 1988)·6' 2", 210 lb·Houston, TX, USA
2026 Pitching
ERA
4.94
WHIP
1.46
IP
162.0
K%
16.1
BB%
9.9
K/9
6.28
W-L
10-14
GS
29
SV
0
HLD
0
DiamondIQ WAR
162.0 IP · 2026
-0.4
-4.1 runs above replacement
FIP · 5.32 (park 1.01)0.0
vs replacement · SP, 162.0 IP-4.1
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Changeup28% · 88.5 · 31% whiff
Four-Seam28% · 92.1 · 15% whiff
Cutter14% · 91.0 · 13% whiff
Curveball11% · 82.5 · 22% whiff
Slider10% · 86.3 · 34% whiff
Sinker9% · 92.4 · 8% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Arizona Diamondbacks | 10 | 14 | 4.94 | 29 | 29 | 0 | 162.0 | 113 | 70 | 1.46 | 6.28 |
| 2025 | — | 12 | 9 | 3.52 | 32 | 32 | 0 | 184.0 | 167 | 48 | 1.11 | 8.17 |
| 2025 | Texas Rangers | 3 | 3 | 4.23 | 10 | 10 | 0 | 55.1 | 46 | 10 | 1.25 | 7.48 |
| 2025 | Arizona Diamondbacks | 9 | 6 | 3.22 | 22 | 22 | 0 | 128.2 | 121 | 38 | 1.06 | 8.46 |
| 2024 | Arizona Diamondbacks | 5 | 1 | 4.03 | 13 | 13 | 0 | 73.2 | 63 | 19 | 1.17 | 7.70 |
Recent Games
Sep 23 @ Colorado RockiesW
5.1 IP, 2 ER, 2 K, 1 BB
Sep 16 vs Miami MarlinsL
4.2 IP, 3 ER, 9 K, 2 BB
Sep 11 vs Texas RangersW
4.1 IP, 1 ER, 3 K, 3 BB
Sep 4 @ Houston AstrosL
6.0 IP, 3 ER, 4 K, 0 BB
Aug 29 @ San Francisco GiantsW
7.0 IP, 0 ER, 7 K, 4 BB
Aug 24 vs Chicago CubsL
5.2 IP, 3 ER, 4 K, 3 BB
Aug 18 @ Boston Red SoxL
4.0 IP, 6 ER, 2 K, 4 BB
Aug 12 vs Colorado RockiesL
5.0 IP, 6 ER, 2 K, 3 BB
Aug 7 vs Los Angeles DodgersW
5.2 IP, 1 ER, 4 K, 4 BB
Aug 2 @ Cleveland GuardiansL
5.0 IP, 5 ER, 5 K, 4 BB