Bo Naylor
C · L/R · age 26.6 · MILXX-DOCTOBER OK
ACTIVE
2+113
3+002 / 3+015
2 (using one in 2026)
3 of 5
SALARY ARBITRATION ELIGIBLE
Trade (CLE) Aug'26
0 / 0
1 yr, $824.9k (2026)
Next 90 days, by the model
69%
3%
19%
8%
<1%
Pushing the cut risk around: this season's WAR (-0.55) raises it, option days this season (113) raises it, last season's WAR (1.44) lowers it.
Context the model does not weigh: ZiPS projects 2.4 WAR, -0.6 WAR this season; 3 C 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?
MIL returns 3 C on the 40-man once nobody leaves; about 3 C jobs survive a normal winter. By his own recent record he ranks 2nd among the returners (0.9 WAR against a bar of 0.1), which the calibrated model turns into 94% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 2nd (2.3 WAR, bar 0.7), worth 97% kept on the same model.
| By recent record: returning C | Proj. WAR |
|---|---|
| 1. William Contreras | 3.2 |
| 2. Bo Naylor | 0.9 |
| 3. Jeferson Querolast job | 0.1 |
| By ZiPS / Steamer: returning C | Proj. WAR |
|---|---|
| 1. William Contreras | 4.8 |
| 2. Bo Naylor | 2.3 |
| 3. Jeferson Querolast job | 0.7 |
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, 2 option years left. 3 of the five optional assignments for 2026 remain. A 2026 option year is already used (113 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 (1 yr, $824.9k (2026)). Three-plus years of service 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
- 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
- Option years and the 20-day rule2 option years left entering 2026; 113 option days this season uses one (1 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 walkCrossed 3 years of service this season: may elect free agency if outrighted.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 2022 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2026 | 113 | yes | May 9, 2026 to Aug 1, 2026 (84d)Aug 2, 2026 to Aug 23, 2026 (21d, within 24h of trade)Aug 24, 2026 to Sep 1, 2026 (8d) |
| 2023 | 78 | yes | Mar 10, 2023 to May 21, 2023 (52d, spring training)May 22, 2023 to Jun 17, 2023 (26d) |
Transaction log
| Sep 1, 2026 | Recalled | Milwaukee Brewers recalled C Bo Naylor from Nashville Sounds. |
| Aug 24, 2026 | Optioned | Milwaukee Brewers optioned C Bo Naylor to Nashville Sounds. |
| Aug 23, 2026 | Recalled | Milwaukee Brewers recalled C Bo Naylor from Nashville Sounds. |
| Aug 1, 2026 | Optioned | Milwaukee Brewers optioned C Bo Naylor to Nashville Sounds. |
| Aug 1, 2026 | Traded | Cleveland Guardians traded C Bo Naylor and RHP Codi Heuer to Milwaukee Brewers for CF Blake Perkins and RHP Craig Yoho. |
| May 9, 2026 | Optioned | Cleveland Guardians optioned C Bo Naylor to Columbus Clippers. |
| Jun 17, 2023 | Recalled | Cleveland Guardians recalled C Bo Naylor from Columbus Clippers. |
| May 22, 2023 | Optioned | Cleveland Guardians optioned C Bo Naylor to Columbus Clippers. |
| May 21, 2023 | Recalled | Cleveland Guardians recalled C Bo Naylor from Columbus Clippers. |
| Mar 10, 2023 | Optioned | Cleveland Guardians optioned C Bo Naylor to Columbus Clippers. |
| Nov 22, 2022 | Status change | Cleveland Guardians activated C Bo Naylor. |
| Oct 1, 2022 | Contract selected | Cleveland Guardians selected the contract of C Bo Naylor from Columbus Clippers. |
| Jul 3, 2018 | Signed | Cleveland Indians signed C Noah Naylor. |
Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 2). Rule 5 exposure deadline Nov 17, 2026.