Seth Johnson

RP · R/R · age 28 · ATH

4TH OPTIONOCTOBER OK

Roster status
ACTIVE
Service thru 2025
0+061
Service now / projected
0+129 / 0+142
Option years left (2026)
1 (using one in 2026)
Assignments left this season
1 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Trade (PHI) Aug'26
Outrighted / DFA'd before
0 / 0
Contract
none listed

Next 90 days, by the model

Stays put
73%
Designated
16%
Optioned
8%
Traded
1%
Released or non-tendered
2%

Pushing the cut risk up: this season's WAR (0.09) raises it, age (27.99) raises it, last season's WAR (-0.01) raises it.

Context the model does not weigh: ZiPS projects 0.0 WAR, 0.1 WAR this season; 16 RP on the 40-man, of whom Mark Leiter Jr. 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?

ATH returns 15 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 10th among the returners (0.1 WAR against a bar of 0.1), which the calibrated model turns into 85% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 15th (-0.0 WAR, bar 0.1), worth 85% kept on the same model.

By recent record: returning RPProj. WAR
1. Brady Basso1.3
2. Luis Medina1.1
3. Hogan Harris0.8
4. Drew Rom0.4
5. Hayden Juenger0.4
6. Scott Blewett0.3
7. Elvis Alvarado0.2
8. Brooks Kriske0.2
9. Geoff Hartlieblast job0.1
10. Seth Johnson0.1
11. Joe Rock-0.0
12. Hunter Bigge-0.0
By ZiPS / Steamer: returning RPProj. WAR
1. Joe Rock0.6
2. Luis Medina0.5
3. Brady Basso0.5
4. Drew Rom0.5
5. Hogan Harris0.3
6. Justin Sterner0.3
7. Elvis Alvarado0.1
8. Yunior Tur0.1
9. Hayden Juengerlast job0.1
10. Scott Blewett0.1
11. Geoff Hartlieb0.1
12. Hunter Bigge0.0

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 minors
Yes, 1 option year left. 1 of the five optional assignments for 2026 remain. A 2026 option year is already used (106 days), so further trips this season cost nothing extra. Once down he must stay 15 days unless he replaces an injured or traded player.
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. If he clears, the club can outright him to the minors and he has no say; he stays under club control on a minor-league deal. He would then be Rule 5-eligible and would hold XX-D rights against any future outright. 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
2026106yesMar 19, 2026 to Apr 13, 2026 (19d, spring training)Apr 14, 2026 to Apr 18, 2026 (4d)Apr 21, 2026 to Jun 18, 2026 (58d)Jul 8, 2026 to Jul 16, 2026 (8d)Aug 19, 2026 to Sep 5, 2026 (17d)
2025157yesMar 10, 2025 to Jun 1, 2025 (75d, spring training)Jun 6, 2025 to Jul 2, 2025 (26d)Jul 3, 2025 to Jul 4, 2025 (1d)Aug 5, 2025 to Sep 29, 2025 (55d)
2024154yesMar 8, 2024 to Jul 30, 2024 (132d, spring training)Sep 9, 2024 to Oct 1, 2024 (22d)
2023186yesMar 11, 2023 to Oct 2, 2023 (186d, spring training)

Transaction log

Sep 5, 2026RecalledAthletics recalled RHP Seth Johnson from Las Vegas Aviators.
Aug 19, 2026OptionedAthletics optioned RHP Seth Johnson to Las Vegas Aviators.
Aug 4, 2026Status changeAthletics activated RHP Seth Johnson.
Aug 3, 2026TradedPhiladelphia Phillies traded RHP Seth Johnson to Athletics for RF Colby Thomas.
Jul 16, 2026RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Jul 8, 2026OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Jun 18, 2026RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Apr 21, 2026OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Apr 18, 2026RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Apr 14, 2026OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Apr 13, 2026RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Mar 19, 2026OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Oct 10, 2025Status changePhiladelphia Phillies activated RHP Seth Johnson.
Sep 29, 2025RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Aug 5, 2025OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Jul 4, 2025RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Jul 3, 2025OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Jul 2, 2025RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Jun 6, 2025OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Jun 1, 2025RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Mar 10, 2025OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Oct 10, 2024Status changePhiladelphia Phillies activated RHP Seth Johnson.
Oct 1, 2024RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Sep 9, 2024OptionedPhiladelphia Phillies optioned RHP Seth Johnson to Lehigh Valley IronPigs.
Sep 8, 2024RecalledPhiladelphia Phillies recalled RHP Seth Johnson from Lehigh Valley IronPigs.
Jul 30, 2024TradedPhiladelphia Phillies traded LHP Gregory Soto to Baltimore Orioles for RHP Seth Johnson and RHP Moisés Chace.
Mar 8, 2024OptionedBaltimore Orioles optioned RHP Seth Johnson to Bowie Baysox.
Oct 11, 2023Status changeBaltimore Orioles activated RHP Seth Johnson.
Oct 2, 2023RecalledBaltimore Orioles recalled RHP Seth Johnson from Bowie Baysox.
Mar 11, 2023OptionedBaltimore Orioles optioned RHP Seth Johnson to Norfolk Tides.
Nov 15, 2022Status changeBaltimore Orioles activated RHP Seth Johnson.
Nov 15, 2022Contract selectedBaltimore Orioles selected the contract of RHP Seth Johnson from Aberdeen IronBirds.
Aug 1, 2022TradedTampa Bay Rays traded RHP Seth Johnson to Baltimore Orioles.
Jun 12, 2019SignedTampa Bay Rays signed RHP Seth Johnson.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction+fangraphs(4th); FanGraphs shows 1). Rule 5 exposure deadline Nov 17, 2026.