Nathan Eaton

OF/INF · R/R · age 29.7 · BOS

XX-DOCTOBER OK

Roster status
ACTIVE
Service thru 2025
1+020
Service now / projected
1+066 / 1+079
Option years left (2026)
1 (using one in 2026)
Assignments left this season
3 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Free Agent (KCR) Nov'24
Outrighted / DFA'd before
1 / 1
Contract
none listed

Next 90 days, by the model

Stays put
54%
Designated
23%
Optioned
20%
Traded
2%
Released or non-tendered
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 IFProj. WAR
1. Willson Contreras3.5
2. Caleb Durbin2.8
3. Nick Sogard1.7
4. Trevor Story1.7
5. Curtis Mead1.3
6. Romy Gonzalez1.1
7. Nathan Eaton1.0
8. Mickey Gasperlast job0.6
9. Masataka Yoshida0.6
10. Anthony Seigler0.5
11. Andruw Monasterio-0.1
12. Tsung-Che Cheng-0.2
By ZiPS / Steamer: returning IFProj. WAR
1. Caleb Durbin2.4
2. Trevor Story2.0
3. Willson Contreras1.7
4. Kristian Campbell0.9
5. Nathan Eaton0.8
6. Romy Gonzalez0.8
7. Mickey Gasper0.7
8. Curtis Meadlast job0.7
9. Andruw Monasterio0.7
10. Masataka Yoshida0.6
11. Triston Casas0.6
12. Nick Sogard0.6

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, season by season

SeasonDays on optionOption year usedStints
2026128yesMar 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)
202554yesJun 2, 2025 to Jun 16, 2025 (14d)Jul 9, 2025 to Aug 18, 2025 (40d)
2023130yesApr 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)
202210no (under 20)Aug 22, 2022 to Sep 1, 2022 (10d)

Transaction log

Sep 6, 2026RecalledBoston Red Sox recalled OF Nate Eaton from Worcester Red Sox.
Jul 14, 2026OptionedBoston Red Sox optioned OF Nate Eaton to Worcester Red Sox.
Jul 9, 2026Status changeBoston Red Sox activated OF Nate Eaton.
Jun 8, 2026RecalledBoston Red Sox recalled OF Nate Eaton from Worcester Red Sox.
Apr 30, 2026OptionedBoston Red Sox optioned OF Nate Eaton to Worcester Red Sox.
Apr 29, 2026RecalledBoston Red Sox recalled OF Nate Eaton from Worcester Red Sox.
Mar 23, 2026OptionedBoston Red Sox optioned 3B Nate Eaton to Worcester Red Sox.
Aug 18, 2025RecalledBoston Red Sox recalled 3B Nate Eaton from Worcester Red Sox.
Jul 9, 2025OptionedBoston Red Sox optioned 3B Nate Eaton to Worcester Red Sox.
Jun 16, 2025RecalledBoston Red Sox recalled RF Nate Eaton from Worcester Red Sox.
Jun 2, 2025OptionedBoston Red Sox optioned RF Nate Eaton to Worcester Red Sox.
Jun 1, 2025Contract selectedBoston Red Sox selected the contract of RF Nate Eaton from Worcester Red Sox.
Nov 26, 2024Signed as free agentBoston Red Sox signed free agent RF Nate Eaton to a minor league contract.
Nov 8, 2023OutrightedKansas City Royals sent C Nate Eaton outright to Omaha Storm Chasers.
Nov 2, 2023Designated for assignmentKansas City Royals designated C Nate Eaton for assignment.
Oct 2, 2023RecalledKansas City Royals recalled C Nate Eaton from Omaha Storm Chasers.
Jun 26, 2023OptionedKansas City Royals optioned C Nate Eaton to Omaha Storm Chasers.
Jun 23, 2023RecalledKansas City Royals recalled C Nate Eaton from Omaha Storm Chasers.
Jun 16, 2023OptionedKansas City Royals optioned C Nate Eaton to Omaha Storm Chasers.
Jun 9, 2023RecalledKansas City Royals recalled C Nate Eaton from Omaha Storm Chasers.
May 25, 2023OptionedKansas City Royals optioned C Nate Eaton to Omaha Storm Chasers.
May 5, 2023RecalledKansas City Royals recalled C Nate Eaton from Omaha Storm Chasers.
Apr 24, 2023OptionedKansas City Royals optioned C Nate Eaton to Omaha Storm Chasers.
Sep 1, 2022RecalledKansas City Royals recalled C Nate Eaton and from Omaha Storm Chasers.
Aug 22, 2022OptionedKansas City Royals optioned C Nate Eaton to Omaha Storm Chasers.
Aug 4, 2022Contract selectedKansas City Royals selected the contract of C Nate Eaton from Omaha Storm Chasers.
Jul 18, 2022Returned (Rule 5)C Nate Eaton returned to Omaha Storm Chasers from Kansas City Royals.
Jul 14, 2022Contract selectedKansas City Royals selected the contract of C Nate Eaton from Omaha Storm Chasers.
Jun 10, 2018SignedKansas 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.