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Merrill Kelly
MLB
About Merrill Kelly
Kenneth Merrill Kelly (born October 14, 1988) is an American professional baseball pitcher for the Arizona Diamondbacks of Major League Baseball (MLB). He has previously played in MLB for the Texas Rangers, and in the KBO League for the SK Wyverns.
Bio summary from Wikipedia.
Player Stats
| G | 1 | PA | 0 | AB | 0 | R | 0 |
|---|---|---|---|---|---|---|---|
| H | 0 | 2B | 0 | 3B | 0 | HR | 0 |
| RBI | 0 | SB | 0 | CS | 0 | BB | 0 |
| SO | 0 | TB | 0 | WAR | 0.0 |
2026 batting — Baseball-Reference
Player Stats
| W | 10 | L | 14 | ERA | 4.94 | G | 29 |
|---|---|---|---|---|---|---|---|
| GS | 29 | SV | 0 | IP | 162.0 | H | 166 |
| R | 93 | ER | 89 | BB | 70 | SO | 113 |
| WHIP | 1.457 | H/9 | 9.2 | HR/9 | 1.6 | BB/9 | 3.9 |
| K/9 | 6.3 | FIP | 5.32 | WAR | 0.3 |
2026 pitching — Baseball-Reference
Career — Lahman, through 2025
Batting
| Year | Team | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | ARI | 32 | 52 | 3 | 1 | 0 | 0 | 0 | 2 | 0 | 2 | 25 | .019 |
| 2021 | ARI | 27 | 47 | 1 | 3 | 1 | 0 | 0 | 1 | 0 | 4 | 27 | .064 |
Pitching
| Year | Team | W | L | ERA | G | GS | CG | SHO | SV | IP | H | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | ARI | 13 | 14 | 4.42 | 32 | 32 | 0 | 0 | 0 | 183.1 | 184 | 29 | 57 | 158 |
| 2020 | ARI | 3 | 2 | 2.59 | 5 | 5 | 0 | 0 | 0 | 31.1 | 26 | 5 | 5 | 29 |
| 2021 | ARI | 7 | 11 | 4.44 | 27 | 27 | 0 | 0 | 0 | 158.0 | 163 | 21 | 41 | 130 |
| 2022 | ARI | 13 | 8 | 3.37 | 33 | 33 | 0 | 0 | 0 | 200.1 | 167 | 21 | 61 | 177 |
| 2023 | ARI | 12 | 8 | 3.29 | 30 | 30 | 0 | 0 | 0 | 177.2 | 143 | 20 | 69 | 187 |
| 2024 | ARI | 5 | 1 | 4.03 | 13 | 13 | 0 | 0 | 0 | 73.2 | 67 | 11 | 19 | 63 |
| 2025 | ARI | 9 | 6 | 3.22 | 22 | 22 | 0 | 0 | 0 | 128.2 | 98 | 14 | 38 | 121 |
| 2025 | TEX | 3 | 3 | 4.23 | 10 | 10 | 0 | 0 | 0 | 55.1 | 59 | 9 | 10 | 46 |
Season lines from the Lahman Baseball Database (Version 2025, via SABR), joined through the Chadwick Register ID crosswalk. The databank runs through the 2025 season — the current season is the 2026 line below, from the MLB Stats API.
2026 Season — MLB Stats API
Batting
| G | PA | AB | R | H | 2B | 3B | HR | RBI | SB | CS | BB | SO | AVG | OBP | SLG | OPS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
Pitching
| W | L | ERA | G | GS | CG | SHO | SV | IP | H | R | ER | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 14 | 4.94 | 29 | 29 | 1 | 0 | 0 | 162.0 | 166 | 93 | 89 | 28 | 70 | 113 | 1.46 |
2026 regular-season line from the MLB Stats API (statsapi.mlb.com), pulled when this page was built. Multi-team stints are combined; rate stats are recomputed from the combined totals.
Watch Merrill Kelly Highlights
“Merrill Kelly | 2025 Highlights” · Open on YouTube · More Merrill Kelly videos