Willi Castro
INF/OF · S/R · age 29.4 · COLXIX-AOCTOBER OK
10-DAY IL (Heel inflammation)
6+017
7+017 / 7+017
1
5 of 5
SIGNED THRU 2027
Free Agent (CHC) Jan'26
0 / 0
2 yr, $12.8M (2026-27)
Next 90 days, by the model
83%
3%
<1%
10%
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 IF | Proj. WAR |
|---|---|
| 1. T.J. Rumfield | 2.1 |
| 2. Kyle Karros | 1.7 |
| 3. Willi Castro | 1.1 |
| 4. Connor Norby | 0.8 |
| 5. Mickey Moniak | 0.7 |
| 6. Ezequiel Tovar | 0.6 |
| 7. Vimael Machin | 0.4 |
| 8. Troy Johnstonlast job | 0.3 |
| 9. Ryan Ritter | 0.0 |
| 10. Adael Amador | -0.2 |
| 11. Blake Adams | -0.3 |
| 12. Sterlin Thompson | -0.6 |
| By ZiPS / Steamer: returning IF | Proj. WAR |
|---|---|
| 1. Ezequiel Tovar | 2.6 |
| 2. Connor Norby | 1.7 |
| 3. Ryan Ritter | 1.4 |
| 4. Willi Castro | 1.1 |
| 5. Kyle Karros | 1.1 |
| 6. Mickey Moniak | 0.7 |
| 7. Vimael Machin | 0.6 |
| 8. Chad Stevenslast job | 0.5 |
| 9. Troy Johnston | 0.4 |
| 10. Adael Amador | 0.3 |
| 11. Blake Adams | 0.2 |
| 12. T.J. Rumfield | 0.2 |
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
- Article XIX-A: five years, no forced assignment6+017 of MLB service through 2025: can refuse an optional assignment and cannot be outrighted without consent.A player with five or more years of Major League service cannot be assigned anywhere but another Major League club without his written consent. 2022-2026 Basic Agreement, Article XIX(A)(2), p. 94
- Article XIX-A: five years, no forced outright5+ years of service: an outright assignment requires his consent; otherwise the club must keep, trade or release him.A player with five or more years of service can refuse an outright assignment altogether; the club must then keep him, trade him, or release him. 2022-2026 Basic Agreement, Article XIX(A)(2), p. 94
- Article XX-B free agency6+ years of service but under contract through 2027.Six or more years of service with an expiring contract: free agent at 9 AM ET the day after the last World Series game. 2022-2026 Basic Agreement, Article XX(B)(1)-(2), p. 102
- Injured players cannot be sent downOn the Major League injured list: cannot be optioned or outrighted until he is healthy and reinstated, so an injured fringe player keeps his roster spot by default.No assignment to a minor-league club while a player is on a Major League injured list, and an injured player who cannot play cannot be optioned or outrighted. 2022-2026 Basic Agreement, Article XIX(C)(1)-(2), p. 96
- Post-season roster eligibilityOn 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. 2022-2026 Basic Agreement, Attachment 25, p. 253 (the number itself is in Major League Rule 40)
- Rule 5 clockOn a 40-man roster (would first be exposed after 2017 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2022 | 10 | no (under 20) | Apr 6, 2022 to Apr 17, 2022 (10d, spring training) |
| 2021 | 6 | no (under 20) | Jul 16, 2021 to Jul 22, 2021 (6d) |
| 2020 | 19 | no (under 20) | Mar 26, 2020 to Aug 11, 2020 (19d, spring training) |
| 2019 | 157 | yes | Mar 10, 2019 to Aug 24, 2019 (157d, spring training) |
| 2018 | 124 | yes | Mar 9, 2018 to Jul 31, 2018 (124d, spring training) |
Transaction log
| Sep 5, 2026 | Status change | Colorado Rockies placed 2B Willi Castro on the 10-day injured list retroactive to September 2, 2026. Left heel inflammation. |
| Jan 22, 2026 | Signed as free agent | Colorado Rockies signed free agent LF Willi Castro. |
| Nov 2, 2025 | Declared free agent | LF Willi Castro elected free agency. |
| Aug 1, 2025 | Status change | Chicago Cubs activated LF Willi Castro. |
| Jul 31, 2025 | Traded | Minnesota Twins traded LF Willi Castro to Chicago Cubs for RHP Sam Armstrong and RHP Ryan Gallagher. |
| May 5, 2025 | Status change | Minnesota Twins activated 2B Willi Castro from the 10-day injured list. |
| Apr 24, 2025 | Status change | Minnesota Twins placed 2B Willi Castro on the 10-day injured list retroactive to April 21, 2025. Right oblique strain. |
| Apr 16, 2025 | Status change | Minnesota Twins activated 2B Willi Castro. |
| Sep 3, 2023 | Status change | Minnesota Twins activated SS Willi Castro from the 10-day injured list. |
| Aug 15, 2023 | Status change | Minnesota Twins placed SS Willi Castro on the 10-day injured list retroactive to August 12, 2023. Mild left oblique strain. |
| Mar 29, 2023 | Contract selected | Minnesota Twins selected the contract of SS Willi Castro, , and from St. Paul Saints. |
| Dec 23, 2022 | Signed as free agent | Minnesota Twins signed free agent SS Willi Castro to a minor league contract. |
| Nov 18, 2022 | Declared free agent | SS Willi Castro elected free agency. |
| Oct 6, 2022 | Status change | Detroit Tigers activated SS Willi Castro from the 10-day injured list. |
| Sep 30, 2022 | Status change | Detroit Tigers placed SS Willi Castro on the 10-day injured list. Left hamstring strain. |
| Apr 17, 2022 | Recalled | Detroit Tigers recalled SS Willi Castro, , , and from Toledo Mud Hens. |
| Apr 6, 2022 | Optioned | Detroit Tigers optioned SS Willi Castro to Toledo Mud Hens. |
| Jul 22, 2021 | Recalled | Detroit Tigers recalled SS Willi Castro. |
| Jul 22, 2021 | Recalled | Detroit Tigers recalled SS Willi Castro from Toledo Mud Hens. |
| Jul 16, 2021 | Optioned | Detroit Tigers optioned SS Willi Castro to Toledo Mud Hens. |
| Sep 28, 2020 | Status change | Detroit Tigers activated SS Willi Castro from the 10-day injured list. |
| Sep 27, 2020 | Status change | Detroit Tigers placed SS Willi Castro on the 10-day injured list. Right shoulder soreness. |
| Aug 11, 2020 | Recalled | Detroit Tigers recalled SS Willi Castro from Tigers Alternate Training Site. |
| Mar 26, 2020 | Optioned | Detroit Tigers optioned SS Willi Castro to Toledo Mud Hens. |
| Aug 24, 2019 | Contract selected | Detroit Tigers selected the contract of Willi Castro from Toledo Mud Hens. |
| Mar 10, 2019 | Optioned | Detroit Tigers optioned SS Willi Castro to Toledo Mud Hens. |
| Oct 1, 2018 | Recalled | Detroit Tigers recalled Willi Castro from Toledo Mud Hens. |
| Jul 31, 2018 | Traded | Detroit Tigers traded CF Leonys Martin and RHP Kyle Dowdy to Cleveland Indians for SS Willi Castro. |
| Mar 9, 2018 | Optioned | Cleveland Indians optioned SS Willi Castro to Akron RubberDucks. |
| Nov 20, 2017 | Contract selected | Cleveland Indians selected the contract of Willi Castro from Lynchburg Hillcats. |
| Jul 2, 2013 | Signed as free agent | Cleveland 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.