Kodai Senga
RP · L/R · age 33.6 · NYMXIX-A (POSTED)XX-DOCTOBER OK
ACTIVE
3+000
4+000 / 4+000
2
5 of 5
SALARY ARBITRATION ELIGIBLE
Free Agent (NPB) Dec'22
0 / 0
5 yr, $75M (2023-27), 2028 club option; Full no-trade clause for 2023-2025. May block trades to 10 teams each year after 2025.
Next 90 days, by the model
83%
3%
7%
6%
<1%
Pushing the cut risk around: age (33.62) raises it, this season's WAR (-0.50) raises it, this season's strikeout rate (0.26) lowers it.
Context the model does not weigh: ZiPS projects 1.6 WAR, -0.5 WAR this season; 14 RP 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?
NYM returns 14 RP on the 40-man once nobody leaves; about 9 RP jobs survive a normal winter. By his own recent record he ranks 7th among the returners (0.4 WAR against a bar of 0.1), which the calibrated model turns into 85% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 1st (1.6 WAR, bar 0.1), worth 93% kept on the same model.
| By recent record: returning RP | Proj. WAR |
|---|---|
| 1. Devin Williams | 2.1 |
| 2. Nathan Lavender | 2.0 |
| 3. Reed Garrett | 1.2 |
| 4. Daniel Duarte | 0.9 |
| 5. Tobias Myers | 0.9 |
| 6. Dedniel Nunez | 0.8 |
| 7. Kodai Senga | 0.4 |
| 8. Jack Weisenburger | 0.3 |
| 9. Austin Warrenlast job | 0.1 |
| 10. Dylan Ross | 0.1 |
| 11. Cionel Perez | 0.0 |
| 12. Jonathan Pintaro | -0.2 |
| By ZiPS / Steamer: returning RP | Proj. WAR |
|---|---|
| 1. Kodai Senga | 1.6 |
| 2. Devin Williams | 0.8 |
| 3. Tobias Myers | 0.7 |
| 4. Jonathan Pintaro | 0.4 |
| 5. Chayce McDermott | 0.3 |
| 6. Austin Warren | 0.2 |
| 7. Dedniel Nunez | 0.1 |
| 8. Dylan Ross | 0.1 |
| 9. Reed Garrettlast job | 0.1 |
| 10. Cionel Perez | 0.1 |
| 11. Nathan Lavender | 0.0 |
| 12. Daniel Duarte | 0.0 |
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 (or, for a posted player, a contractual clause) 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 (5 yr, $75M (2023-27), 2028 club option). 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. 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 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
- 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
- Article XIX-A: five years, no forced assignmentPosted from NPB/KBO: posted players almost always negotiate Article XIX-A consent rights into the contract.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 XX-D: the right to walk3+000 of service (3+): may elect free agency if outrighted, now or deferred to season's end.A player with three or more years of service (or a Super Two), or any player being outrighted for the second time in his career, may elect free agency instead of accepting the outright. 2022-2026 Basic Agreement, Article XX(D)(1)-(2), (4), p. 110
- 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 2026 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2025 | 24 | yes | Sep 5, 2025 to Sep 29, 2025 (24d) |
Transaction log
| Jun 16, 2026 | Status change | New York Mets activated RHP Kodai Senga from the 15-day injured list. |
| Apr 28, 2026 | Status change | New York Mets placed RHP Kodai Senga on the 15-day injured list retroactive to April 27, 2026. Lumbar spine inflammation. |
| Sep 29, 2025 | Recalled | New York Mets recalled RHP Kodai Senga from Syracuse Mets. |
| Sep 5, 2025 | Optioned | New York Mets optioned RHP Kodai Senga to Syracuse Mets. |
| Jul 11, 2025 | Status change | New York Mets activated RHP Kodai Senga from the 15-day injured list. |
| Jun 13, 2025 | Status change | New York Mets placed RHP Kodai Senga on the 15-day injured list. Right hamstring strain. |
| Oct 5, 2024 | Status change | New York Mets activated RHP Kodai Senga from the 60-day injured list. |
| Jul 28, 2024 | Status change | New York Mets transferred RHP Kodai Senga from the 15-day injured list to the 60-day injured list. Left calf strain. |
| Jul 27, 2024 | Status change | New York Mets placed RHP Kodai Senga on the 15-day injured list. Left calf strain. |
| Jul 26, 2024 | Status change | New York Mets activated RHP Kodai Senga from the 60-day injured list. |
| Apr 10, 2024 | Status change | New York Mets transferred RHP Kodai Senga from the 15-day injured list to the 60-day injured list. Right shoulder capsule strain. |
| Mar 28, 2024 | Status change | New York Mets placed RHP Kodai Senga on the 15-day injured list retroactive to March 25, 2024. |
| Mar 25, 2024 | Status change | New York Mets placed RHP Kodai Senga on the 15-day injured list. Right shoulder capsule strain. |
| Dec 17, 2022 | Status change | New York Mets activated RHP Kodai Senga. |
| Dec 17, 2022 | Signed as free agent | New York Mets signed free agent RHP Kodai Senga. |
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.