Willi Castro

INF/OF · S/R · age 29.4 · COL

XIX-AOCTOBER OK

Roster status
10-DAY IL (Heel inflammation)
Service thru 2025
6+017
Service now / projected
7+017 / 7+017
Option years left (2026)
1
Assignments left this season
5 of 5
Contract (2027)
SIGNED THRU 2027
Acquired
Free Agent (CHC) Jan'26
Outrighted / DFA'd before
0 / 0
Contract
2 yr, $12.8M (2026-27)

Next 90 days, by the model

Stays put
83%
Designated
3%
Optioned
<1%
Traded
10%
Released or non-tendered
5%

Pushing the cut risk around: this season's WAR (0.73) lowers it, age (29.39) raises it, this season's plate appearances (477) lowers it.

Context the model does not weigh: ZiPS projects 1.0 WAR, 0.7 WAR this season; 13 OF 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?

COL returns 14 IF on the 40-man once nobody leaves; about 8 IF jobs survive a normal winter. By his own recent record he ranks 3rd among the returners (1.1 WAR against a bar of 0.3), which the calibrated model turns into 82% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 4th (1.1 WAR, bar 0.5), worth 85% kept on the same model.

By recent record: returning IFProj. WAR
1. T.J. Rumfield2.1
2. Kyle Karros1.7
3. Willi Castro1.1
4. Connor Norby0.8
5. Mickey Moniak0.7
6. Ezequiel Tovar0.6
7. Vimael Machin0.4
8. Troy Johnstonlast job0.3
9. Ryan Ritter0.0
10. Adael Amador-0.2
11. Blake Adams-0.3
12. Sterlin Thompson-0.6
By ZiPS / Steamer: returning IFProj. WAR
1. Ezequiel Tovar2.6
2. Connor Norby1.7
3. Ryan Ritter1.4
4. Willi Castro1.1
5. Kyle Karros1.1
6. Mickey Moniak0.7
7. Vimael Machin0.6
8. Chad Stevenslast job0.5
9. Troy Johnston0.4
10. Adael Amador0.3
11. Blake Adams0.2
12. T.J. Rumfield0.2

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 (2 yr, $12.8M (2026-27)). 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. The guaranteed years remain owed in full. 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
Let the season end
Under contract (2 yr, $12.8M (2026-27)): nothing to decide this winter. Moving him later means trading the contract or releasing him and paying the guaranteed years in full.
Release waivers and termination pay

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
202210no (under 20)Apr 6, 2022 to Apr 17, 2022 (10d, spring training)
20216no (under 20)Jul 16, 2021 to Jul 22, 2021 (6d)
202019no (under 20)Mar 26, 2020 to Aug 11, 2020 (19d, spring training)
2019157yesMar 10, 2019 to Aug 24, 2019 (157d, spring training)
2018124yesMar 9, 2018 to Jul 31, 2018 (124d, spring training)

Transaction log

Sep 5, 2026Status changeColorado Rockies placed 2B Willi Castro on the 10-day injured list retroactive to September 2, 2026. Left heel inflammation.
Jan 22, 2026Signed as free agentColorado Rockies signed free agent LF Willi Castro.
Nov 2, 2025Declared free agentLF Willi Castro elected free agency.
Aug 1, 2025Status changeChicago Cubs activated LF Willi Castro.
Jul 31, 2025TradedMinnesota Twins traded LF Willi Castro to Chicago Cubs for RHP Sam Armstrong and RHP Ryan Gallagher.
May 5, 2025Status changeMinnesota Twins activated 2B Willi Castro from the 10-day injured list.
Apr 24, 2025Status changeMinnesota Twins placed 2B Willi Castro on the 10-day injured list retroactive to April 21, 2025. Right oblique strain.
Apr 16, 2025Status changeMinnesota Twins activated 2B Willi Castro.
Sep 3, 2023Status changeMinnesota Twins activated SS Willi Castro from the 10-day injured list.
Aug 15, 2023Status changeMinnesota Twins placed SS Willi Castro on the 10-day injured list retroactive to August 12, 2023. Mild left oblique strain.
Mar 29, 2023Contract selectedMinnesota Twins selected the contract of SS Willi Castro, , and from St. Paul Saints.
Dec 23, 2022Signed as free agentMinnesota Twins signed free agent SS Willi Castro to a minor league contract.
Nov 18, 2022Declared free agentSS Willi Castro elected free agency.
Oct 6, 2022Status changeDetroit Tigers activated SS Willi Castro from the 10-day injured list.
Sep 30, 2022Status changeDetroit Tigers placed SS Willi Castro on the 10-day injured list. Left hamstring strain.
Apr 17, 2022RecalledDetroit Tigers recalled SS Willi Castro, , , and from Toledo Mud Hens.
Apr 6, 2022OptionedDetroit Tigers optioned SS Willi Castro to Toledo Mud Hens.
Jul 22, 2021RecalledDetroit Tigers recalled SS Willi Castro.
Jul 22, 2021RecalledDetroit Tigers recalled SS Willi Castro from Toledo Mud Hens.
Jul 16, 2021OptionedDetroit Tigers optioned SS Willi Castro to Toledo Mud Hens.
Sep 28, 2020Status changeDetroit Tigers activated SS Willi Castro from the 10-day injured list.
Sep 27, 2020Status changeDetroit Tigers placed SS Willi Castro on the 10-day injured list. Right shoulder soreness.
Aug 11, 2020RecalledDetroit Tigers recalled SS Willi Castro from Tigers Alternate Training Site.
Mar 26, 2020OptionedDetroit Tigers optioned SS Willi Castro to Toledo Mud Hens.
Aug 24, 2019Contract selectedDetroit Tigers selected the contract of Willi Castro from Toledo Mud Hens.
Mar 10, 2019OptionedDetroit Tigers optioned SS Willi Castro to Toledo Mud Hens.
Oct 1, 2018RecalledDetroit Tigers recalled Willi Castro from Toledo Mud Hens.
Jul 31, 2018TradedDetroit Tigers traded CF Leonys Martin and RHP Kyle Dowdy to Cleveland Indians for SS Willi Castro.
Mar 9, 2018OptionedCleveland Indians optioned SS Willi Castro to Akron RubberDucks.
Nov 20, 2017Contract selectedCleveland Indians selected the contract of Willi Castro from Lynchburg Hillcats.
Jul 2, 2013Signed as free agentCleveland Indians signed free agent SS Willi Castro to a minor league contract.

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