Merrill Kelly #29
Arizona Diamondbacks
- P
- B/T: R/R
- 6' 2"/210
- Age: 37
- Kenneth Merrill Kelly
- Status: Active
- Nickname: Mert
- Born: 10/14/1988 in Houston, TX
- Draft: 2010, Tampa Bay Rays, Round: 8, Overall Pick: 251
- College: Arizona State
- MLB Debut: 4/01/2019
2026 Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 1 | 1-0 | 0.00 | 5.0 | 2 | 0.80 |
2026 Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 29 | 10-14 | 4.94 | 162.0 | 113 | 1.46 |
2026 Stats
| AB | AVG | HR | RBI | SB | OPS |
|---|---|---|---|---|---|
| 0 | .000 | 0 | 0 | 0 | .000 |
MiLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 128 | 40-26 | 3.40 | 540.1 | 390 | 1.25 |
MLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 201 | 75-67 | 3.93 | 1170.1 | 1024 | 1.23 |
MLB Career Stats
| AB | AVG | HR | RBI | SB | OPS |
|---|---|---|---|---|---|
| 99 | .040 | 0 | 3 | 0 | .146 |
| Year | AB | R | H | HR | RBI | SB | AVG | OBP | OPS |
|---|---|---|---|---|---|---|---|---|---|
| 2026 MLB Stats | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| MLB Career Stats | 99 | 4 | 4 | 0 | 3 | 0 | .040 | .095 | .146 |
| Year | W | L | ERA | G | GS | SV | IP | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|
| 2026 MiLB Stats | 1 | 0 | 0.00 | 1 | 1 | 0 | 5.0 | 2 | 0.80 |
| 2026 MLB Stats | 10 | 14 | 4.94 | 29 | 29 | 0 | 162.0 | 113 | 1.46 |
| MiLB Career Stats | 40 | 26 | 3.40 | 128 | 79 | 0 | 540.1 | 390 | 1.25 |
| MLB Career Stats | 75 | 67 | 3.93 | 201 | 201 | 0 | 1170.1 | 1024 | 1.23 |
- Next AZ Game: 9-27 @ SD
Splits
| Duration | W | L | ERA | G | GS | SV | IP | H | ER | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Last 7 Games | 2 | 4 | 4.38 | 7 | 7 | 0 | 37.0 | 34 | 18 | 17 | 31 | 1.38 |
| Last 15 Games | 5 | 6 | 4.03 | 15 | 15 | 0 | 80.1 | 74 | 36 | 37 | 66 | 1.38 |
| Last 30 Games | 10 | 14 | 4.94 | 29 | 29 | 0 | 162.0 | 166 | 89 | 70 | 113 | 1.46 |
| Duration | AB | R | H | HR | RBI | BB | SO | SB | AVG | OBP | SLG |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last 7 Games | - | - | - | - | - | - | - | - | --- | --- | --- |
| Last 15 Games | - | - | - | - | - | - | - | - | --- | --- | --- |
| Last 30 Games | - | - | - | - | - | - | - | - | --- | --- | --- |
| Last 3 Games | W | L | SV | IP | H | ER | BB | SO |
|---|---|---|---|---|---|---|---|---|
| 9/23 @ COL | 1 | 0 | 0 | 5.1 | 4 | 2 | 1 | 2 |
| 9/16 vs MIA | 0 | 1 | 0 | 4.2 | 7 | 3 | 2 | 9 |
| 9/11 vs TEX | 0 | 0 | 0 | 4.1 | 2 | 1 | 3 | 3 |
| Last 3 Games | AB | R | H | HR | RBI | BB | SO | SB |
|---|---|---|---|---|---|---|---|---|
| 8/29 @ SF | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
2026 :
SP
(29)
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Latest Transactions
| Team | Date | Transaction |
|---|---|---|
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April 16, 2026 | RHP Merrill Kelly changed number to 29. |
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April 15, 2026 | RHP Merrill Kelly changed number to 42. |
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April 14, 2026 | Arizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list. |
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April 3, 2026 | Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Reno Aces. |
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March 25, 2026 | Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to March 24, 2026. Left intercostal nerve irritation. |
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December 19, 2025 | Arizona Diamondbacks signed free agent RHP Merrill Kelly. |
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November 2, 2025 | RHP Merrill Kelly elected free agency. |
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August 1, 2025 | Texas Rangers activated RHP Merrill Kelly. |
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July 31, 2025 | Arizona Diamondbacks traded RHP Merrill Kelly to Texas Rangers for LHP Kohl Drake, LHP Mitch Bratt and RHP David Hagaman. |
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April 16, 2025 | RHP Merrill Kelly changed number to 29. |
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April 15, 2025 | RHP Merrill Kelly changed number to 42. |
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August 11, 2024 | Arizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list. |
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August 6, 2024 | Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Hillsboro Hops. |
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August 6, 2024 | Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Hillsboro Hops. |
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May 2, 2024 | Arizona Diamondbacks transferred RHP Merrill Kelly from the 15-day injured list to the 60-day injured list. Right shoulder strain. |
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April 23, 2024 | Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to April 20, 2024. Right shoulder strain. |
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July 25, 2023 | Arizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list. |
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June 27, 2023 | Arizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to June 25, 2023. Right calf inflammation. |
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February 9, 2023 | United States activated RHP Merrill Kelly. |
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September 15, 2021 | Arizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list. |
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September 9, 2021 | Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to ACL D-backs. |
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August 15, 2021 | Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list. |
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May 7, 2021 | Arizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list. |
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May 4, 2021 | Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list. |
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November 1, 2020 | Arizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list. |
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November 1, 2020 | Arizona Diamondbacks activated P Merrill Kelly from the 60 day injured list. |
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November 1, 2020 | Arizona Diamondbacks activated P Merrill Kelly from the 60 day injured list. |
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August 31, 2020 | Arizona Diamondbacks transferred RHP Merrill Kelly from the 10-day injured list to the 60-day injured list. Right shoulder nerve impingement. |
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August 24, 2020 | Arizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list. Right shoulder nerve impingement. |
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December 4, 2018 | Arizona Diamondbacks signed free agent RHP Merrill Kelly. |
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December 17, 2014 | Durham Bulls released RHP Merrill Kelly. |
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October 17, 2014 | RHP Merrill Kelly assigned to Leones del Escogido. |
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September 3, 2014 | Durham Bulls activated RHP Merrill Kelly from the temporarily inactive list. |
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August 30, 2014 | Durham Bulls placed RHP Merrill Kelly on the temporarily inactive list. |
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August 19, 2014 | Durham Bulls activated RHP Merrill Kelly from the temporarily inactive list. |
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August 15, 2014 | Durham Bulls placed RHP Merrill Kelly on the temporarily inactive list. |
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July 15, 2014 | RHP Merrill Kelly assigned to International League All-Stars. |
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February 3, 2014 | Tampa Bay Rays invited non-roster RHP Merrill Kelly to spring training. |
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June 13, 2013 | RHP Merrill Kelly assigned to Durham Bulls from Montgomery Biscuits. |
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March 17, 2013 | RHP Merrill Kelly assigned to Tampa Bay Rays. |
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April 5, 2012 | Merrill Kelly assigned to Montgomery Biscuits from Charlotte Stone Crabs. |
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May 23, 2011 | Merrill Kelly roster status changed by Charlotte Stone Crabs. |
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May 16, 2011 | Charlotte Stone Crabs placed RHP Merrill Kelly on the 7-day disabled list retroactive to May 14, 2011. |
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April 5, 2011 | RHP Merrill Kelly assigned to Charlotte Stone Crabs from Bowling Green Hot Rods. |
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August 13, 2010 | Merrill Kelly assigned to Bowling Green Hot Rods from Hudson Valley Renegades. |
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July 9, 2010 | Merrill Kelly assigned to Hudson Valley Renegades from Tampa Bay Rays. |
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July 8, 2010 | Tampa Bay Rays signed RHP Merrill Kelly. |
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Awards
INT Mid-Season All-Star
| Year | ||
|---|---|---|
| 2014 | Durham Bulls | INT |
Diamondbacks Pitcher of the Year
| Year | ||
|---|---|---|
| 2021 | Arizona Diamondbacks | NL |
NL Pitcher of the Month
| Month | ||
|---|---|---|
| 07/2022 | Arizona Diamondbacks | NL |
NL Player of the Week
| Week | ||
|---|---|---|
| 07/31/2022 | Arizona Diamondbacks | NL |
League Rankings
Runs
| R | ||
|---|---|---|
| 2026 | 93 | in NL |
| 2026 | 0 | in PCL |
| 2022 | 77 | in NL |
| 2021 | 82 | in NL |
| 2021 | 2 | in ACL |
| 2019 | 95 | in NL |
Doubles
| 2B | ||
|---|---|---|
| 2026 | 29 | in NL |
| 2026 | 1 | in PCL |
| 2023 | 30 | in NL |
| 2022 | 40 | in NL |
| 2021 | 31 | in NL |
| 2021 | 2 | in ACL |
| 2019 | 38 | in NL |
Triples
| 3B | ||
|---|---|---|
| 2026 | 4 | in NL |
| 2026 | 0 | in PCL |
| 2023 | 3 | in NL |
| 2021 | 4 | in NL |
| 2021 | 0 | in ACL |
| 2019 | 4 | in NL |
Home Runs
| HR | ||
|---|---|---|
| 2026 | 28 | in NL |
| 2026 | 0 | in PCL |
| 2022 | 21 | in NL |
| 2021 | 21 | in NL |
| 2021 | 0 | in ACL |
| 2019 | 29 | in NL |
Strikeouts
| SO | ||
|---|---|---|
| 2023 | 187 | in NL |
| 2022 | 177 | in NL |
| 2019 | 158 | in NL |
Hits
| H | ||
|---|---|---|
| 2026 | 166 | in NL |
| 2026 | 2 | in PCL |
| 2022 | 167 | in NL |
| 2021 | 163 | in NL |
| 2021 | 3 | in ACL |
| 2019 | 184 | in NL |
At Bats
| AB | ||
|---|---|---|
| 2023 | 645 | in NL |
| 2022 | 739 | in NL |
| 2021 | 612 | in NL |
| 2021 | 16 | in ACL |
| 2019 | 709 | in NL |
Innings Pitched
| IP | ||
|---|---|---|
| 2026 | 162.0 | in NL |
| 2026 | 5.0 | in PCL |
| 2023 | 177.2 | in NL |
| 2022 | 200.1 | in NL |
| 2021 | 158.0 | in NL |
| 2021 | 4.0 | in ACL |
| 2019 | 183.1 | in NL |
Wins
| Wins | ||
|---|---|---|
| 2026 | 10 | in NL |
| 2026 | 1 | in PCL |
| 2023 | 12 | in NL |
| 2022 | 13 | in NL |
| 2019 | 13 | in NL |
Losses
| Losses | ||
|---|---|---|
| 2026 | 14 | in NL |
| 2026 | 0 | in PCL |
| 2021 | 11 | in NL |
| 2021 | 0 | in ACL |
| 2019 | 14 | in NL |
Total Bases
| TB | ||
|---|---|---|
| 2026 | 287 | in NL |
| 2026 | 3 | in PCL |
| 2022 | 274 | in NL |
| 2021 | 265 | in NL |
| 2021 | 5 | in ACL |
| 2019 | 317 | in NL |
Batting Average
| AVG | ||
|---|---|---|
| 2026 | .268 | in NL |
| 2026 | .118 | in PCL |
Caught Stealing
| CS | ||
|---|---|---|
| 2026 | 4 | in NL |
| 2026 | 0 | in PCL |
Stolen Bases
| SB | ||
|---|---|---|
| 2026 | 16 | in NL |
| 2026 | 0 | in PCL |
Earned Run Average
| ERA | ||
|---|---|---|
| 2026 | 4.94 | in NL |
| 2026 | 0.00 | in PCL |
WHIP
| WHIP | ||
|---|---|---|
| 2026 | 1.46 | in NL |
| 2026 | 0.80 | in PCL |
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