Justin Martinez

RP · R/R · age 25.1 · AZ

XX-DOCTOBER OK

Roster status
ACTIVE
Service thru 2025
2+024
Service now / projected
3+024 / 3+024
Option years left (2026)
1
Assignments left this season
5 of 5
Contract (2027)
SIGNED THRU 2029 + 2030 CLUB OPTION / 2031 CLUB OPTION
Acquired
Amateur FA (DOM) Mar'18
Outrighted / DFA'd before
0 / 0
Contract
5 yr, $18M (2025-29), 2030-31 club options

Next 90 days, by the model

Stays put
95%
Designated
1%
Optioned
3%
Traded
2%
Released or non-tendered
<1%

Pushing the cut risk around: this season's strikeout rate (0.35) lowers it, age (25.13) lowers it, this season's WAR (0.12) raises it.

Context the model does not weigh: ZiPS projects 0.7 WAR, 0.1 WAR this season; 16 RP on the 40-man, of whom Kevin Ginkel, Jonathan Loaisiga, Taylor Clarke, Dennis Santana, Derek Law, Zac Gallen, A.J. Puk, Ryan Thompson are 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 8 RP on the 40-man once 8 free agents leave; about 9 RP jobs survive a normal winter. By his own recent record he ranks 3rd among the returners (1.1 WAR against a bar of -0.4), which the calibrated model turns into 98% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 1st (0.5 WAR, bar -0.1), worth 98% kept on the same model.

By recent record: returning RPProj. WAR
1. Brandyn Garcia2.2
2. Juan Morillo1.9
3. Justin Martinez1.1
4. Andrew Saalfrank0.6
5. Gerardo Carrillo0.4
6. Kade Strowd0.2
7. Drey Jameson-0.1
8. Juan Burgos-0.4
By ZiPS / Steamer: returning RPProj. WAR
1. Justin Martinez0.5
2. Drey Jameson0.4
3. Andrew Saalfrank0.0
4. Brandyn Garcia0.0
5. Kade Strowd-0.1
6. Juan Morillo-0.1
7. Gerardo Carrillo-0.1
8. Juan Burgos-0.1

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 minors
Yes, 1 option year left. 5 of the five optional assignments for 2026 remain. He has 0 option days this season; at 20 a 2026 option year is used and those days stop counting as service. Once down he must stay 15 days unless he replaces an injured or traded player. An option does not trigger his Article XX-D right; only an outright would.
Option years and the 20-day rule · Five optional assignments per season · Minimum stay on option
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 (5 yr, $18M (2025-29), 2030-31 club options). Three-plus years of service give him the Article XX-D choice: elect free agency immediately (giving up the rest of his salary) or accept the assignment, keep getting paid, and elect free agency after the season unless he is added back to a 40-man first. 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 XX-D: the right to walk
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 (5 yr, $18M (2025-29), 2030-31 club options): 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

Option years, season by season

SeasonDays on optionOption year usedStints
202430yesMar 10, 2024 to Apr 17, 2024 (28d, spring training)Apr 21, 2024 to Apr 23, 2024 (2d)
2023155yesMar 14, 2023 to Jun 27, 2023 (89d, spring training)Jun 29, 2023 to Jul 7, 2023 (8d)Jul 22, 2023 to Aug 17, 2023 (26d)Aug 26, 2023 to Sep 27, 2023 (32d)

Transaction log

Aug 17, 2026Status changeArizona Diamondbacks activated RHP Justin Martinez from the 60-day injured list.
Feb 14, 2026Status changeArizona Diamondbacks placed RHP Justin Martinez on the 60-day injured list. Recovery from right ulnar collateral ligament surgery.
Nov 6, 2025Status changeArizona Diamondbacks activated RHP Justin Martinez from the 60-day injured list.
Jun 15, 2025Status changeArizona Diamondbacks transferred RHP Justin Martinez from the 15-day injured list to the 60-day injured list. Right UCL sprain.
Jun 10, 2025Status changeArizona Diamondbacks placed RHP Justin Martinez on the 15-day injured list. Right UCL sprain.
May 23, 2025Status changeArizona Diamondbacks activated RHP Justin Martinez from the 15-day injured list.
May 1, 2025Status changeArizona Diamondbacks placed RHP Justin Martinez on the 15-day injured list. Right shoulder inflammation.
Apr 23, 2024RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Apr 21, 2024OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Apr 17, 2024RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Mar 10, 2024OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Nov 2, 2023Status changeArizona Diamondbacks activated RHP Justin Martinez.
Sep 27, 2023RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Aug 26, 2023OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Aug 17, 2023RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Jul 22, 2023OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Jul 7, 2023RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Jun 29, 2023OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Jun 27, 2023RecalledArizona Diamondbacks recalled RHP Justin Martinez from Reno Aces.
Mar 14, 2023OptionedArizona Diamondbacks optioned RHP Justin Martinez to Reno Aces.
Nov 15, 2022Contract selectedArizona Diamondbacks selected the contract of RHP Justin Martinez from Reno Aces.
Nov 15, 2022Status changeArizona Diamondbacks activated RHP Justin Martinez.
Mar 5, 2018Signed as free agentArizona Diamondbacks signed free agent RHP Justin Martinez to a minor league contract.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 1). Rule 5 exposure deadline Nov 17, 2026.