Arizona Diamondbacks· #29· Pitcher
Merrill Kelly “Mert”
Bats R · Throws R·Age 37 (Oct 14, 1988)·6' 2", 210 lb·Houston, TX, USA
2026 Pitching
ERA
5.08
WHIP
1.48
IP
141.2
K%
15.4
BB%
10.4
K/9
6.04
W-L
9-12
GS
25
SV
0
HLD
0
DiamondIQ WAR
141.7 IP · 2026
-0.7
-7.2 runs above replacement
FIP · 5.54 (park 1.02)0.0
vs replacement · SP, 141.7 IP-7.2
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Changeup27% · 88.5 · 31% whiff
Four-Seam27% · 92.1 · 13% whiff
Cutter13% · 91.0 · 13% whiff
Curveball12% · 82.6 · 22% whiff
Slider10% · 86.4 · 35% whiff
Sinker10% · 92.3 · 9% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Arizona Diamondbacks | 9 | 12 | 5.08 | 25 | 25 | 0 | 141.2 | 95 | 64 | 1.48 | 6.04 |
| 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
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
Jul 27 @ Pittsburgh PiratesL
5.2 IP, 0 ER, 6 K, 1 BB
Jul 22 vs AthleticsW
5.0 IP, 2 ER, 3 K, 1 BB
Jul 17 vs St. Louis CardinalsL
5.0 IP, 1 ER, 3 K, 2 BB
Jul 9 @ San Diego PadresW
7.0 IP, 1 ER, 6 K, 3 BB