Willie MacIver

C/1B · R/R · age 29.9 · SEA

OCTOBER OK

Roster status
OPTIONED
Service thru 2025
0+094
Service now / projected
0+099 / 0+099
Option years left (2026)
2 (using one in 2026)
Assignments left this season
4 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Waivers (TOR) Aug'26
Outrighted / DFA'd before
0 / 2
Contract
none listed

Next 90 days, by the model

Stays put
27%
Designated
63%
Optioned
7%
Traded
<1%
Released or non-tendered
2%

Pushing the cut risk up: this season's WAR raises it, option days this season (168) raises it, age (29.88) raises it.

Context the model does not weigh: ZiPS projects 1.7 WAR; 14 OF on the 40-man, of whom Randy Arozarena, Taylor Ward 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?

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 10th among the returners (-0.2 WAR against a bar of 0.2), which the calibrated model turns into 27% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 7th (0.9 WAR, bar 0.8), worth 48% 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 minors
Yes, 2 option years left. 4 of the five optional assignments for 2026 remain. A 2026 option year is already used (169 days), so further trips this season cost nothing extra. Once down he must stay 10 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
2026169yesMar 15, 2026 to Apr 23, 2026 (29d, spring training)Apr 24, 2026 to Aug 10, 2026 (108d, within 24h of trade)Aug 14, 2026 to now (32d)
202536yesJun 30, 2025 to Aug 5, 2025 (36d)

Transaction log

Aug 14, 2026OptionedSeattle Mariners optioned C Willie MacIver to Tacoma Rainiers.
Aug 12, 2026Claimed off waiversSeattle Mariners claimed C Willie MacIver off waivers from Toronto Blue Jays.
Aug 10, 2026Designated for assignmentToronto Blue Jays designated C Willie MacIver for assignment.
Apr 24, 2026OptionedToronto Blue Jays optioned C Willie MacIver to Buffalo Bisons.
Apr 24, 2026TradedTexas Rangers traded C Willie MacIver to Toronto Blue Jays for cash.
Apr 23, 2026Designated for assignmentTexas Rangers designated C Willie MacIver for assignment.
Mar 15, 2026OptionedTexas Rangers optioned C Willie MacIver to Round Rock Express.
Nov 5, 2025Claimed off waiversTexas Rangers claimed C Willie MacIver off waivers from Athletics.
Aug 5, 2025RecalledAthletics recalled C Willie MacIver from Las Vegas Aviators.
Jun 30, 2025OptionedAthletics optioned C Willie MacIver to Las Vegas Aviators.
May 23, 2025Contract selectedAthletics selected the contract of C Willie MacIver from Las Vegas Aviators.
Dec 17, 2024Signed as free agentOakland Athletics signed free agent C Willie MacIver to a minor league contract.
Jun 21, 2018SignedColorado Rockies signed C Willie MacIver.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 2). Rule 5 exposure deadline Nov 17, 2026.