Nathan Eaton
OF/INF · R/R · age 29.7 · BOSXX-DOCTOBER OK
ACTIVE
1+020
1+066 / 1+079
1 (using one in 2026)
3 of 5
PRE-ARBITRATION / AUTO-RENEWAL
Free Agent (KCR) Nov'24
1 / 1
none listed
Next 90 days, by the model
54%
23%
20%
2%
1%
Pushing the cut risk up: age (29.73) raises it, this season's WAR (0.17) raises it, prior DFAs (1) raises it.
Context the model does not weigh: ZiPS projects 1.6 WAR, 0.2 WAR this season; 15 OF on the 40-man, of whom Isiah Kiner-Falefa is 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?
BOS returns 15 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 7th among the returners (1.0 WAR against a bar of 0.6), which the calibrated model turns into 45% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 5th (0.8 WAR, bar 0.7), worth 42% kept on the same model.
| By recent record: returning IF | Proj. WAR |
|---|---|
| 1. Willson Contreras | 3.5 |
| 2. Caleb Durbin | 2.8 |
| 3. Nick Sogard | 1.7 |
| 4. Trevor Story | 1.7 |
| 5. Curtis Mead | 1.3 |
| 6. Romy Gonzalez | 1.1 |
| 7. Nathan Eaton | 1.0 |
| 8. Mickey Gasperlast job | 0.6 |
| 9. Masataka Yoshida | 0.6 |
| 10. Anthony Seigler | 0.5 |
| 11. Andruw Monasterio | -0.1 |
| 12. Tsung-Che Cheng | -0.2 |
| By ZiPS / Steamer: returning IF | Proj. WAR |
|---|---|
| 1. Caleb Durbin | 2.4 |
| 2. Trevor Story | 2.0 |
| 3. Willson Contreras | 1.7 |
| 4. Kristian Campbell | 0.9 |
| 5. Nathan Eaton | 0.8 |
| 6. Romy Gonzalez | 0.8 |
| 7. Mickey Gasper | 0.7 |
| 8. Curtis Meadlast job | 0.7 |
| 9. Andruw Monasterio | 0.7 |
| 10. Masataka Yoshida | 0.6 |
| 11. Triston Casas | 0.6 |
| 12. Nick Sogard | 0.6 |
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. 3 of the five optional assignments for 2026 remain. A 2026 option year is already used (128 days), so further trips this season cost nothing extra. Once down he must stay 10 days unless he replaces an injured or traded player. An option does not trigger his Article XX-D right; only an outright would.
- 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. He was outrighted before (1x) give him the Article XX-D choice: elect free agency immediately (giving up the rest of his salary) or accept the assignment, keep getting paid, and elect free agency after the season unless he is added back to a 40-man first. 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; 128 option days this season uses one (0 after 2026).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 2 times this season that count toward the cap of 5: 3 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))
- Article XX-D: the right to walkOutrighted before (Nov 2023): a second outright lets him elect free agency, so he cannot be stashed in the minors against his will.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 2021 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2026 | 128 | yes | Mar 23, 2026 to Apr 29, 2026 (35d, spring training)Apr 30, 2026 to Jun 8, 2026 (39d)Jul 14, 2026 to Sep 6, 2026 (54d) |
| 2025 | 54 | yes | Jun 2, 2025 to Jun 16, 2025 (14d)Jul 9, 2025 to Aug 18, 2025 (40d) |
| 2023 | 130 | yes | Apr 24, 2023 to May 5, 2023 (11d)May 25, 2023 to Jun 9, 2023 (15d)Jun 16, 2023 to Jun 23, 2023 (7d)Jun 27, 2023 to Oct 2, 2023 (97d) |
| 2022 | 10 | no (under 20) | Aug 22, 2022 to Sep 1, 2022 (10d) |
Transaction log
| Sep 6, 2026 | Recalled | Boston Red Sox recalled OF Nate Eaton from Worcester Red Sox. |
| Jul 14, 2026 | Optioned | Boston Red Sox optioned OF Nate Eaton to Worcester Red Sox. |
| Jul 9, 2026 | Status change | Boston Red Sox activated OF Nate Eaton. |
| Jun 8, 2026 | Recalled | Boston Red Sox recalled OF Nate Eaton from Worcester Red Sox. |
| Apr 30, 2026 | Optioned | Boston Red Sox optioned OF Nate Eaton to Worcester Red Sox. |
| Apr 29, 2026 | Recalled | Boston Red Sox recalled OF Nate Eaton from Worcester Red Sox. |
| Mar 23, 2026 | Optioned | Boston Red Sox optioned 3B Nate Eaton to Worcester Red Sox. |
| Aug 18, 2025 | Recalled | Boston Red Sox recalled 3B Nate Eaton from Worcester Red Sox. |
| Jul 9, 2025 | Optioned | Boston Red Sox optioned 3B Nate Eaton to Worcester Red Sox. |
| Jun 16, 2025 | Recalled | Boston Red Sox recalled RF Nate Eaton from Worcester Red Sox. |
| Jun 2, 2025 | Optioned | Boston Red Sox optioned RF Nate Eaton to Worcester Red Sox. |
| Jun 1, 2025 | Contract selected | Boston Red Sox selected the contract of RF Nate Eaton from Worcester Red Sox. |
| Nov 26, 2024 | Signed as free agent | Boston Red Sox signed free agent RF Nate Eaton to a minor league contract. |
| Nov 8, 2023 | Outrighted | Kansas City Royals sent C Nate Eaton outright to Omaha Storm Chasers. |
| Nov 2, 2023 | Designated for assignment | Kansas City Royals designated C Nate Eaton for assignment. |
| Oct 2, 2023 | Recalled | Kansas City Royals recalled C Nate Eaton from Omaha Storm Chasers. |
| Jun 26, 2023 | Optioned | Kansas City Royals optioned C Nate Eaton to Omaha Storm Chasers. |
| Jun 23, 2023 | Recalled | Kansas City Royals recalled C Nate Eaton from Omaha Storm Chasers. |
| Jun 16, 2023 | Optioned | Kansas City Royals optioned C Nate Eaton to Omaha Storm Chasers. |
| Jun 9, 2023 | Recalled | Kansas City Royals recalled C Nate Eaton from Omaha Storm Chasers. |
| May 25, 2023 | Optioned | Kansas City Royals optioned C Nate Eaton to Omaha Storm Chasers. |
| May 5, 2023 | Recalled | Kansas City Royals recalled C Nate Eaton from Omaha Storm Chasers. |
| Apr 24, 2023 | Optioned | Kansas City Royals optioned C Nate Eaton to Omaha Storm Chasers. |
| Sep 1, 2022 | Recalled | Kansas City Royals recalled C Nate Eaton and from Omaha Storm Chasers. |
| Aug 22, 2022 | Optioned | Kansas City Royals optioned C Nate Eaton to Omaha Storm Chasers. |
| Aug 4, 2022 | Contract selected | Kansas City Royals selected the contract of C Nate Eaton from Omaha Storm Chasers. |
| Jul 18, 2022 | Returned (Rule 5) | C Nate Eaton returned to Omaha Storm Chasers from Kansas City Royals. |
| Jul 14, 2022 | Contract selected | Kansas City Royals selected the contract of C Nate Eaton from Omaha Storm Chasers. |
| Jun 10, 2018 | Signed | Kansas City Royals signed C Nathan Eaton. |
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.