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Merrill Kelly
Merrill Kelly
Arizona Diamondbacks • Pitcher
Age 37 • 6' 2" • 202 lb
Bats: R • Throws: R
MLB Debut: 2019-04-01
Born: Houston , TX • USA
Draft: 2010
2026 Stats
W
4
L
3
ERA
5.71
WHIP
1.51
IP
41.0
SO
27
SV
0
HLD
0
G
7
GS
7
Career Stats
W
69
L
56
ERA
3.84
WHIP
1.21
IP
1049.1
SO
938
SV
0
HLD
0
G
179
GS
179
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2019 AZ 32 32 183.1 13 14 — 158 4.42 1.31
2020 AZ 5 5 31.1 3 2 — 29 2.59 0.99
2021 AZ 27 27 158.0 7 11 — 130 4.44 1.29
2022 AZ 33 33 200.1 13 8 — 177 3.37 1.14
2023 AZ 30 30 177.2 12 8 — 187 3.29 1.19
2024 AZ 13 13 73.2 5 1 — 63 4.03 1.17
2025 Total 32 32 184.0 12 9 — 167 3.52 1.11
2026 AZ 7 7 41.0 4 3 — 27 5.71 1.51
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2013 TB 1—1.0 ———2 0.000.00
2014 TB 3—5.0 2——4 1.801.00
2019 AZ 6621.1 13—11 5.911.36
2020 AZ 328.0 ———6 5.631.50
2021 AZ 5518.2 —2—17 5.301.50
2022 AZ 227.0 1——13 0.000.14
2023 AZ 227.0 —1—7 3.861.43
2024 AZ 4412.0 11—18 6.001.33
2025 AZ 5515.1 1——16 4.701.57
2026 AZ 336.1 —1—2 12.792.68
Postseason
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2023 AZ 4424.0 31—28 2.250.83
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2026-05-20 vs SF 6.0 8 3 3 0 4 1
2026-05-15 @ COL 9.0 4 1 1 0 3 1
2026-05-09 vs NYM 7.0 3 1 1 3 6 0
2026-05-03 @ CHC 4.1 8 6 6 3 5 1
2026-04-28 @ MIL 5.0 6 5 5 5 1 1
2026-04-21 vs CWS 4.1 10 8 8 3 5 3
2026-04-14 @ BAL 5.1 5 2 2 4 3 1
Transactions
Entire history • newest first.
2026-04-16
RHP Merrill Kelly changed number to 29.
2026-04-15
RHP Merrill Kelly changed number to 42.
2026-04-14
Arizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list.
2026-04-03
Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Reno Aces.
2026-03-25
Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to March 24, 2026. Left intercostal nerve irritation.
2025-12-19
Arizona Diamondbacks signed free agent RHP Merrill Kelly.
2025-11-02
RHP Merrill Kelly elected free agency.
2025-08-01
Texas Rangers activated RHP Merrill Kelly.
2025-07-31
Arizona Diamondbacks traded RHP Merrill Kelly to Texas Rangers for LHP Kohl Drake, LHP Mitch Bratt and RHP David Hagaman.
2025-04-16
RHP Merrill Kelly changed number to 29.
2025-04-15
RHP Merrill Kelly changed number to 42.
2024-08-11
Arizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list.
2024-08-06
Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Hillsboro Hops.
2024-08-06
Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Hillsboro Hops.
2024-05-02
Arizona Diamondbacks transferred RHP Merrill Kelly from the 15-day injured list to the 60-day injured list. Right shoulder strain.
2024-04-23
Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to April 20, 2024. Right shoulder strain.
2023-07-25
Arizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list.
2023-06-27
Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to June 25, 2023. Right calf inflammation.
2021-09-15
Arizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list.
2021-09-09
Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to ACL D-backs.
2021-08-15
Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list.
2021-05-07
Arizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list.
2021-05-04
Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list.
2020-11-01
Arizona Diamondbacks activated P Merrill Kelly from the 60 day injured list.
2020-11-01
Arizona Diamondbacks activated P Merrill Kelly from the 60 day injured list.
2020-11-01
Arizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list.
2020-08-31
Arizona Diamondbacks transferred RHP Merrill Kelly from the 10-day injured list to the 60-day injured list. Right shoulder nerve impingement.
2020-08-24
Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list. Right shoulder nerve impingement.
2018-12-04
Arizona Diamondbacks signed free agent RHP Merrill Kelly.
2014-02-03
Tampa Bay Rays invited non-roster RHP Merrill Kelly to spring training.
2013-03-17
RHP Merrill Kelly assigned to Tampa Bay Rays.
2010-07-09
Merrill Kelly assigned to Hudson Valley Renegades from Tampa Bay Rays.
2010-07-08
Tampa Bay Rays signed RHP Merrill Kelly.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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