Jacob Lopez

SP · L/L · age 28.5 · ATH

4TH OPTIONOCTOBER OK

Roster status
ACTIVE
Service thru 2025
0+160
Service now / projected
1+127 / 1+140
Option years left (2026)
1 (using one in 2026)
Assignments left this season
4 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Trade (TBR) Dec'24
Outrighted / DFA'd before
0 / 0
Contract
1 yr, $780k (2026)

Next 90 days, by the model

Stays put
93%
Designated
1%
Optioned
4%
Traded
2%
Released or non-tendered
<1%

Pushing the cut risk around: this season's WAR (0.92) lowers it, this season's innings (114.20) lowers it, age (28.51) raises it.

Context the model does not weigh: ZiPS projects 1.6 WAR, 0.9 WAR this season; 12 SP on the 40-man.

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 12 SP on the 40-man once nobody leaves; about 8 SP jobs survive a normal winter. By his own recent record he ranks 4th among the returners (1.2 WAR against a bar of 0.0), which the calibrated model turns into 99% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 3rd (1.5 WAR, bar 0.5), worth 99% kept on the same model.

By recent record: returning SPProj. WAR
1. Luis Severino1.7
2. Gage Jump1.7
3. J.T. Ginn1.4
4. Jacob Lopez1.2
5. Jackson Perkins0.6
6. Jeffrey Springs0.5
7. Braden Nett0.0
8. Henry Baezlast job0.0
9. Joey Estes-0.1
10. Gunnar Hoglund-0.5
11. Mason Barnett-0.8
12. Kade Morris-0.9
By ZiPS / Steamer: returning SPProj. WAR
1. Jeffrey Springs1.9
2. Luis Severino1.8
3. Jacob Lopez1.5
4. J.T. Ginn1.1
5. Gage Jump1.1
6. Jackson Perkins0.7
7. Mason Barnett0.7
8. Kade Morrislast job0.5
9. Henry Baez0.5
10. Braden Nett0.3
11. Joey Estes0.3
12. Gunnar Hoglund0.1

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. 4 of the five optional assignments for 2026 remain. A 2026 option year is already used (35 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 (1 yr, $780k (2026)). 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
202635yesJun 2, 2026 to Jul 7, 2026 (35d)
202557yesMar 12, 2025 to Apr 18, 2025 (31d, spring training)Apr 23, 2025 to Apr 26, 2025 (3d)Apr 30, 2025 to May 23, 2025 (23d)
2024185yesMar 15, 2024 to Apr 18, 2024 (29d, spring training)Apr 20, 2024 to Apr 29, 2024 (9d)May 6, 2024 to Aug 25, 2024 (111d)Aug 26, 2024 to Oct 1, 2024 (36d)
202338yesAug 24, 2023 to Oct 1, 2023 (38d)

Transaction log

Jul 7, 2026RecalledAthletics recalled LHP Jacob Lopez from Las Vegas Aviators.
Jun 2, 2026OptionedAthletics optioned LHP Jacob Lopez to Las Vegas Aviators.
Sep 29, 2025Status changeAthletics activated LHP Jacob Lopez from the 15-day injured list.
Aug 26, 2025Status changeAthletics placed LHP Jacob Lopez on the 15-day injured list retroactive to August 25, 2025. Left elbow flexor strain.
May 23, 2025RecalledAthletics recalled LHP Jacob Lopez from Las Vegas Aviators.
Apr 30, 2025OptionedAthletics optioned LHP Jacob Lopez to Las Vegas Aviators.
Apr 26, 2025RecalledAthletics recalled LHP Jacob Lopez from Las Vegas Aviators.
Apr 23, 2025OptionedAthletics optioned LHP Jacob Lopez to Las Vegas Aviators.
Apr 18, 2025RecalledAthletics recalled LHP Jacob Lopez from Las Vegas Aviators.
Mar 12, 2025OptionedAthletics optioned LHP Jacob Lopez to Las Vegas Aviators.
Dec 14, 2024TradedTampa Bay Rays traded LHP Jeffrey Springs and LHP Jacob Lopez to Athletics for RHP Joe Boyle, 1B Will Simpson, RHP Jacob Watters and Draft Pick. Competetive Balance Round A Draft Pick.
Oct 1, 2024RecalledTampa Bay Rays recalled LHP Jacob Lopez from Durham Bulls.
Aug 26, 2024OptionedTampa Bay Rays optioned LHP Jacob Lopez to Durham Bulls.
Aug 25, 2024RecalledTampa Bay Rays recalled LHP Jacob Lopez from Durham Bulls.
May 6, 2024OptionedTampa Bay Rays optioned LHP Jacob Lopez to Durham Bulls.
Apr 29, 2024RecalledTampa Bay Rays recalled LHP Jacob Lopez from Durham Bulls.
Apr 20, 2024OptionedTampa Bay Rays optioned LHP Jacob Lopez to Durham Bulls.
Apr 18, 2024RecalledTampa Bay Rays recalled LHP Jacob Lopez from Durham Bulls.
Mar 15, 2024OptionedTampa Bay Rays optioned LHP Jacob Lopez to Durham Bulls.
Oct 5, 2023Status changeTampa Bay Rays activated LHP Jacob Lopez.
Oct 1, 2023RecalledTampa Bay Rays recalled LHP Jacob Lopez from Durham Bulls.
Aug 24, 2023OptionedTampa Bay Rays optioned LHP Jacob Lopez to Durham Bulls.
Aug 14, 2023Contract selectedTampa Bay Rays selected the contract of LHP Jacob Lopez from Durham Bulls.
Jul 31, 2019TradedTampa Bay Rays traded LF Joe McCarthy to San Francisco Giants for LHP Jacob Lopez.
Jul 6, 2018SignedSan Francisco Giants signed LHP Jacob Lopez.

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.