Keider Montero
SP · R/R · age 26.2 · DETOCTOBER OK
PATERNITY (Paternity List (9/12))
1+011
2+011 / 2+011
1
5 of 5
PRE-ARBITRATION / AUTO-RENEWAL
Amateur FA (VEN) Aug'16
0 / 0
1 yr, $789.7k (2026)
Next 90 days, by the model
97%
<1%
1%
2%
<1%
Pushing the cut risk around: this season's WAR (2.20) lowers it, this season's innings (147) lowers it, career options (10) raises it.
Context the model does not weigh: ZiPS projects 0.9 WAR, 0.0 WAR this season; 13 SP on the 40-man, of whom Jack Flaherty, Justin Verlander 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?
DET returns 11 SP on the 40-man once 2 free agents leave; 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 0.4), which the calibrated model turns into 100% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 6th (0.6 WAR, bar 0.4), worth 99% kept on the same model.
| By recent record: returning SP | Proj. WAR |
|---|---|
| 1. Framber Valdez | 2.0 |
| 2. Reese Olson | 2.0 |
| 3. Troy Melton | 1.3 |
| 4. Keider Montero | 1.2 |
| 5. Ty Madden | 0.8 |
| 6. Drew Anderson | 0.6 |
| 7. River Ryan | 0.4 |
| 8. Andrew W. Searslast job | 0.4 |
| 9. Jackson Jobe | 0.3 |
| 10. Jake Miller | 0.0 |
| 11. Sawyer Gipson | -0.4 |
| By ZiPS / Steamer: returning SP | Proj. WAR |
|---|---|
| 1. Framber Valdez | 3.4 |
| 2. Drew Anderson | 1.5 |
| 3. Reese Olson | 0.9 |
| 4. Troy Melton | 0.9 |
| 5. Sawyer Gipson | 0.6 |
| 6. Keider Montero | 0.6 |
| 7. River Ryan | 0.4 |
| 8. Ty Maddenlast job | 0.4 |
| 9. Andrew W. Sears | 0.2 |
| 10. Jake Miller | 0.1 |
| 11. Jackson Jobe | 0.1 |
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. 5 of the five optional assignments for 2026 remain. He has 10 option days this season; at 20 a 2026 option year is used and those days stop counting as service. 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, $789.7k (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 and the 20-day rule1 option year left entering 2026; only 10 option days this season (under 20, so none used).A season with fewer than 20 days on optional assignment does not count as an option year, and those days count as Major League service. 2022-2026 Basic Agreement, Article XIX(E) and XXI(B), p. 98 (the number itself is in Major League Rule 7(c))
- Five optional assignments per seasonOptioned 0 times this season that count toward the cap of 5: 5 left.A player can be optioned at most five times in a season; a sixth trip requires outright waivers. 2022-2026 Basic Agreement, Article XIX(E), p. 98 (the number itself is in Major League Rule 7(c))
- 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 2020 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2026 | 10 | no (under 20) | Mar 4, 2026 to Apr 4, 2026 (10d, spring training) |
| 2025 | 100 | yes | Mar 22, 2025 to Apr 16, 2025 (25d)Apr 22, 2025 to Apr 26, 2025 (4d)Apr 27, 2025 to May 8, 2025 (11d)May 9, 2025 to May 13, 2025 (4d)Jun 20, 2025 to Jul 7, 2025 (17d)Jul 26, 2025 to Sep 3, 2025 (39d) |
| 2024 | 103 | yes | Mar 12, 2024 to May 29, 2024 (70d, spring training)May 30, 2024 to Jun 26, 2024 (27d)Jun 27, 2024 to Jul 3, 2024 (6d) |
Transaction log
| Sep 12, 2026 | Status change | Detroit Tigers placed RHP Keider Montero on the paternity list. |
| Apr 4, 2026 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Mar 4, 2026 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Sep 3, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Jul 26, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Jul 7, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Jun 20, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| May 13, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| May 9, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| May 8, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Apr 27, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Apr 26, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Apr 22, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Apr 16, 2025 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Mar 22, 2025 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Oct 5, 2024 | Status change | Detroit Tigers activated RHP Keider Montero. |
| Jul 3, 2024 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Jun 27, 2024 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Jun 26, 2024 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| May 30, 2024 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| May 29, 2024 | Recalled | Detroit Tigers recalled RHP Keider Montero from Toledo Mud Hens. |
| Mar 12, 2024 | Optioned | Detroit Tigers optioned RHP Keider Montero to Toledo Mud Hens. |
| Nov 6, 2023 | Contract selected | Detroit Tigers selected the contract of RHP Keider Montero from Toledo Mud Hens. |
| Aug 25, 2016 | Signed as free agent | Detroit Tigers signed free agent RHP Keider Montero 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 1). Rule 5 exposure deadline Nov 17, 2026.