Brendan Donovan

3B · L/R · age 29.7 · SEA

XIX-AXX-DOCTOBER OK

Roster status
7-DAY IL (Concussion)
Service thru 2025
4+000
Service now / projected
5+000 / 5+000
Option years left (2026)
3
Assignments left this season
5 of 5
Contract (2027)
SALARY ARBITRATION ELIGIBLE
Acquired
Trade (STL) Feb'26
Outrighted / DFA'd before
0 / 0
Contract
1 yr, $5.8M (2026)

Next 90 days, by the model

Stays put
93%
Designated
1%
Optioned
<1%
Traded
5%
Released or non-tendered
<1%

Pushing the cut risk around: this season's WAR (0.97) lowers it, age (29.66) raises it, last season's WAR (2.84) lowers it.

Context the model does not weigh: ZiPS projects 3.0 WAR, 1.0 WAR this season; 7 IF on the 40-man, of whom J.P. Crawford 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 IF on the 40-man once 1 free agent leaves; about 8 IF jobs survive a normal winter. By his own recent record he ranks 1st among the returners (2.8 WAR against a bar of 0.2), which the calibrated model turns into 97% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 1st (3.1 WAR, bar 0.8), worth 98% kept on the same model.

By recent record: returning IFProj. WAR
1. Brendan Donovan2.8
2. Josh Naylor1.8
3. Cole Young1.3
4. Michael Arroyo1.2
5. Luke Raley1.0
6. Lazaro Montes0.8
7. Ryan Bliss0.2
8. Leonardo Rivaslast job0.2
9. Colt Emerson-0.1
10. Willie MacIver-0.2
11. Will Wilson-0.7
12. Weston Wilson-0.8
By ZiPS / Steamer: returning IFProj. WAR
1. Brendan Donovan3.1
2. Josh Naylor2.7
3. Cole Young1.8
4. Colt Emerson1.6
5. Leonardo Rivas1.4
6. Michael Arroyo1.0
7. Willie MacIver0.9
8. Luke Raleylast job0.8
9. Ryan Bliss0.8
10. Weston Wilson0.4
11. Brock Rodden0.3
12. Lazaro Montes0.3

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 (1 yr, $5.8M (2026)). 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. Because he is on the injured list he cannot be outrighted until he is healthy and reinstated, so a DFA now would have to end in a trade or a release. 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. 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
non-tender him
At the tender deadline (Nov 20) the club can decline to offer a contract: no waivers, no termination pay, and he can be re-signed the same night. Tendering means arbitration, where he cannot be cut more than 20% from this year's salary.
Tender deadline · Arbitration: 3 to 6 years · Maximum salary cut

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
202218no (under 20)Apr 3, 2022 to Apr 25, 2022 (18d, spring training)

Transaction log

Aug 23, 2026Status changeSeattle Mariners placed 3B Brendan Donovan on the 7-day injured list retroactive to August 22, 2026. Concussion.
Aug 4, 2026Status changeSeattle Mariners activated 3B Brendan Donovan from the 10-day injured list.
May 17, 2026Status changeSeattle Mariners placed 3B Brendan Donovan on the 10-day injured list retroactive to May 16, 2026. Left groin muscle strain.
May 8, 2026Status changeSeattle Mariners activated 3B Brendan Donovan from the 10-day injured list.
Apr 20, 2026Status changeSeattle Mariners placed 2B Brendan Donovan on the 10-day injured list retroactive to April 18, 2026. Left groin muscle strain.
Feb 2, 2026TradedSt. Louis Cardinals traded 2B Brendan Donovan to Seattle Mariners for CF Colton Ledbetter, SHP Jurrangelo Cijntje, OF Tai Peete, Draft Pick and Draft Pick.
Sep 12, 2025Status changeSt. Louis Cardinals activated 2B Brendan Donovan from the 10-day injured list.
Aug 18, 2025Status changeSt. Louis Cardinals placed 2B Brendan Donovan on the 10-day injured list retroactive to August 15, 2025. Left groin strain.
Jul 14, 2025Status changeNational League All-Stars activated 2B Brendan Donovan.
Nov 3, 2023Status changeSt. Louis Cardinals activated 3B Brendan Donovan from the 60-day injured list.
Sep 1, 2023Status changeSt. Louis Cardinals transferred 3B Brendan Donovan from the 10-day injured list to the 60-day injured list. Left elbow strain.
Aug 1, 2023Status changeSt. Louis Cardinals placed 3B Brendan Donovan on the 10-day injured list. Left elbow strain.
Apr 25, 2022RecalledSt. Louis Cardinals recalled 3B Brendan Donovan, , , and from Memphis Redbirds.
Apr 3, 2022OptionedSt. Louis Cardinals optioned 3B Brendan Donovan to Memphis Redbirds.
Nov 19, 2021Contract selectedSt. Louis Cardinals selected the contract of 3B Brendan Donovan from Memphis Redbirds.
Jun 14, 2018SignedSt. Louis Cardinals signed 3B Brendan Donovan.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 3). Rule 5 exposure deadline Nov 17, 2026.