Merrill Kelly

SP · R/R · age 37.9 · AZ

XIX-AOCTOBER OK

Roster status
ACTIVE
Service thru 2025
7+000
Service now / projected
8+000 / 8+000
Option years left (2026)
3
Assignments left this season
5 of 5
Contract (2027)
SIGNED THRU 2027
Acquired
Free Agent (TEX) Dec'25
Outrighted / DFA'd before
0 / 0
Contract
2 yr, $40M (2026-27), 2028 vesting option; Limited no-trade clause

Next 90 days, by the model

Stays put
97%
Designated
<1%
Optioned
<1%
Traded
2%
Released or non-tendered
<1%

Pushing the cut risk around: last season's WAR (3.18) lowers it, age (37.92) raises it, this season's WAR (-0.28) raises it.

Context the model does not weigh: ZiPS projects 1.9 WAR, -0.3 WAR this season; 12 SP on the 40-man, of whom Corbin Burnes is headed to free agency.

Trained on every 40-man roster snapshot since 2011 and what happened in the following 90 days; it sees roster status, options, service, history and last season's line, not this season's performance or the club's intentions. How well it does.

Is there a job for him next year?

AZ returns 11 SP on the 40-man once 1 free agent leaves; about 8 SP jobs survive a normal winter. By his own recent record he ranks 5th among the returners (0.8 WAR against a bar of 0.0), which the calibrated model turns into 96% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 1st (2.1 WAR, bar 0.4), worth 98% kept on the same model.

By recent record: returning SPProj. WAR
1. Mike Soroka2.1
2. Eduardo Rodriguez1.8
3. Brandon Pfaadt1.6
4. Ryne Nelson1.1
5. Merrill Kelly0.8
6. Mitch Bratt0.6
7. Jose Cabrera0.2
8. Dylan Raylast job0.0
9. Cristian Mena-0.1
10. Blake Walston-0.3
11. Kohl Drake-0.4
By ZiPS / Steamer: returning SPProj. WAR
1. Merrill Kelly2.1
2. Brandon Pfaadt2.0
3. Ryne Nelson1.5
4. Eduardo Rodriguez1.5
5. Mike Soroka0.9
6. Cristian Mena0.8
7. Mitch Bratt0.8
8. Kohl Drakelast job0.4
9. Dylan Ray0.4
10. Blake Walston0.1
11. Jose Cabrera0.0

Departing free agents are excluded; players on club, mutual or player options are counted as returning. The kept probability is calibrated on every September since 2012 using the recent-record projection; the ZiPS/Steamer reading uses the same model with a different ranking, so treat it as a second opinion rather than a calibrated number. Salary enters once arbitration projections publish in October.

October: Post-season eligible

On the 40-man before noon ET Sep 1. He stays eligible as long as he remains on the 40-man or 60-day IL through the post-season; an outright after the cutoff would end automatic eligibility.

The post-season eligibility list is fixed at noon ET on September 1: everyone on the 40-man, the 60-day IL or the military list at that moment, who then stays there without interruption. Attachment 25 (Major League Rule 40)

What happens if the club…

option him to the minorsBLOCKED
Not without his consent: with five years of service he can refuse the assignment or elect free agency instead. The club's only unilateral moves are to keep him, trade him, or release him.
Article XIX-A: five years, no forced assignment
designate him for assignment (or put him on outright waivers)
The club has 7 days to trade him, pass him through outright waivers, or release him; he is paid at the major-league rate and keeps accruing service in the meantime. On outright waivers any club can claim him for $50,000, worst record first, and the claiming club takes his contract (2 yr, $40M (2026-27), 2028 vesting option). If he clears, he cannot be outrighted without his consent: he can refuse and force a release with his contract intact, or elect free agency (forfeiting termination pay). Post-season: an outright after the September 1 cutoff ends his automatic eligibility. He could only return as an approved injury replacement, and only if he accepts the outright and stays on a minor-league reserve list in the organization without interruption; a release makes him ineligible for anyone this October. With real money left on the contract a claim is unlikely; the usual outcome is clearing waivers, then release, with the club paying the balance less what a new club pays him.
Designated for assignment: 7 days · Outright waivers · Article XIX-A: five years, no forced outright
release him
Release waivers cost a claiming club $1 but the claimant assumes the whole contract, so expensive players clear. The club owes the full unpaid balance of this season's salary, offset by whatever another club pays him this year. The guaranteed years remain owed in full. A released player is not post-season eligible for any club this year.
Release waivers and termination pay · Which rate a split contract pays at release
trade himBLOCKED
Not now: players on major-league contracts cannot be traded after the Aug 3 deadline until the day after the World Series.
Trade deadline · 10-and-5 rights · June 15 no-trade for free-agent signees
Let the season end
Under contract (2 yr, $40M (2026-27), 2028 vesting option): nothing to decide this winter. Moving him later means trading the contract or releasing him and paying the guaranteed years in full.
Release waivers and termination pay

What the rules say about him

Transaction log

Apr 14, 2026Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list.
Mar 25, 2026Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to March 24, 2026. Left intercostal nerve irritation.
Dec 19, 2025Signed as free agentArizona Diamondbacks signed free agent RHP Merrill Kelly.
Nov 2, 2025Declared free agentRHP Merrill Kelly elected free agency.
Aug 1, 2025Status changeTexas Rangers activated RHP Merrill Kelly.
Jul 31, 2025TradedArizona Diamondbacks traded RHP Merrill Kelly to Texas Rangers for LHP Kohl Drake, LHP Mitch Bratt and RHP David Hagaman.
Aug 11, 2024Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list.
May 2, 2024Status changeArizona Diamondbacks transferred RHP Merrill Kelly from the 15-day injured list to the 60-day injured list. Right shoulder strain.
Apr 23, 2024Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to April 20, 2024. Right shoulder strain.
Jul 25, 2023Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list.
Jun 27, 2023Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 15-day injured list retroactive to June 25, 2023. Right calf inflammation.
Sep 15, 2021Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list.
Aug 15, 2021Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list.
May 7, 2021Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 10-day injured list.
May 4, 2021Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list.
Nov 1, 2020Status changeArizona Diamondbacks activated P Merrill Kelly from the 60 day injured list.
Nov 1, 2020Status changeArizona Diamondbacks activated RHP Merrill Kelly from the 60-day injured list.
Aug 31, 2020Status changeArizona Diamondbacks transferred RHP Merrill Kelly from the 10-day injured list to the 60-day injured list. Right shoulder nerve impingement.
Aug 24, 2020Status changeArizona Diamondbacks placed RHP Merrill Kelly on the 10-day injured list. Right shoulder nerve impingement.
Dec 4, 2018Signed as free agentArizona Diamondbacks signed free agent RHP Merrill Kelly.
Jul 8, 2010SignedTampa Bay Rays signed RHP Merrill Kelly.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows n/a). Rule 5 exposure deadline Nov 17, 2026.