Josh Simpson

RP · L/L · age 29.1 · SEA

XX-DOCTOBER OK

Roster status
OPTIONED
Service thru 2025
1+108
Service now / projected
1+139 / 1+139
Option years left (2026)
1 (using one in 2026)
Assignments left this season
1 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Purchased (MIA) Feb'26
Outrighted / DFA'd before
1 / 1
Contract
none listed

Next 90 days, by the model

Stays put
29%
Designated
52%
Optioned
15%
Traded
2%
Released or non-tendered
2%

Pushing the cut risk up: this season's WAR (-0.40) raises it, age (29.07) raises it, last season's WAR (-0.43) raises it.

Context the model does not weigh: ZiPS projects -0.1 WAR, -0.4 WAR this season; 15 RP on the 40-man, of whom Hoby Milner 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?

SEA returns 14 RP on the 40-man once 1 free agent leaves; about 9 RP jobs survive a normal winter. By his own recent record he ranks 14th among the returners (-1.4 WAR against a bar of 0.0), which the calibrated model turns into 21% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 13th (-0.1 WAR, bar 0.0), worth 31% kept on the same model.

By recent record: returning RPProj. WAR
1. Andres Muñoz2.1
2. Matt Brash1.3
3. Gabe Speier1.3
4. Jose A. Ferrer1.1
5. Cooper Criswell0.6
6. Seranthony Dominguez0.3
7. Michael Rucker0.1
8. Eduard Bazardo0.0
9. Robinson Ortizlast job0.0
10. Cole Wilcox-0.1
11. Troy Taylor-0.3
12. Nick Davila-0.4
By ZiPS / Steamer: returning RPProj. WAR
1. Andres Muñoz0.8
2. Matt Brash0.7
3. Jose A. Ferrer0.7
4. Cooper Criswell0.5
5. Gabe Speier0.5
6. Seranthony Dominguez0.5
7. Eduard Bazardo0.4
8. Cole Wilcox0.2
9. Nick Davilalast job0.0
10. Michael Rucker0.0
11. Robinson Ortiz-0.1
12. Carlos M. Vargas-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. 1 of the five optional assignments for 2026 remain. A 2026 option year is already used (143 days), so further trips this season cost nothing extra. 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. He was outrighted before (1x) 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.
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. 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
renew him for next year
Pre-arbitration: the club sets his 2027 salary near the minimum ($780,000 floor) and he has no leverage beyond a non-tender.
Minimum salaries · Tender deadline

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
2026143yesMar 13, 2026 to May 1, 2026 (37d, spring training)May 2, 2026 to May 4, 2026 (2d)May 14, 2026 to Jun 27, 2026 (44d)Jun 30, 2026 to Aug 2, 2026 (33d)Aug 19, 2026 to now (27d)
20259no (under 20)Aug 27, 2025 to Sep 5, 2025 (9d)
202428yesSep 3, 2024 to Oct 1, 2024 (28d)
2023181yesMar 20, 2023 to Sep 12, 2023 (166d, spring training)Sep 17, 2023 to Oct 2, 2023 (15d)

Transaction log

Aug 19, 2026OptionedSeattle Mariners optioned LHP Josh Simpson to Tacoma Rainiers.
Aug 2, 2026RecalledSeattle Mariners recalled LHP Josh Simpson from Tacoma Rainiers.
Jun 30, 2026OptionedSeattle Mariners optioned LHP Josh Simpson to Tacoma Rainiers.
Jun 27, 2026RecalledSeattle Mariners recalled LHP Josh Simpson from Tacoma Rainiers.
May 14, 2026OptionedSeattle Mariners optioned LHP Josh Simpson to Tacoma Rainiers.
May 4, 2026RecalledSeattle Mariners recalled LHP Josh Simpson from Tacoma Rainiers.
May 2, 2026OptionedSeattle Mariners optioned LHP Josh Simpson to Tacoma Rainiers.
May 1, 2026RecalledSeattle Mariners recalled LHP Josh Simpson from Tacoma Rainiers.
Mar 13, 2026OptionedSeattle Mariners optioned LHP Josh Simpson to Tacoma Rainiers.
Feb 16, 2026TradedMiami Marlins traded LHP Josh Simpson to Seattle Mariners for cash.
Feb 12, 2026Designated for assignmentMiami Marlins designated LHP Josh Simpson for assignment.
Sep 5, 2025RecalledMiami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Aug 27, 2025OptionedMiami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp.
Jun 21, 2025Contract selectedMiami Marlins selected the contract of LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Nov 4, 2024OutrightedMiami Marlins sent LHP Josh Simpson outright to Jacksonville Jumbo Shrimp.
Oct 1, 2024RecalledMiami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Sep 3, 2024OptionedMiami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp.
Apr 20, 2024Status changeMiami Marlins placed LHP Josh Simpson on the 60-day injured list. Left elbow ulnar neuritis.
Mar 28, 2024Status changeMiami Marlins placed LHP Josh Simpson on the 15-day injured list retroactive to March 25, 2024. Left elbow ulnar neuritis.
Oct 5, 2023Status changeMiami Marlins activated LHP Josh Simpson.
Oct 2, 2023RecalledMiami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Sep 17, 2023OptionedMiami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp.
Sep 12, 2023RecalledMiami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Mar 20, 2023OptionedMiami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp.
Nov 15, 2022Contract selectedMiami Marlins selected the contract of LHP Josh Simpson from Jacksonville Jumbo Shrimp.
Jun 11, 2019SignedMiami Marlins signed LHP Josh Simpson.

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.