Aaron Ashby

RP · R/L · age 28.3 · MIL

XX-DOCTOBER OK

Roster status
ACTIVE
Service thru 2025
3+088
Service now / projected
4+088 / 4+088
Option years left (2026)
1
Assignments left this season
5 of 5
Contract (2027)
SIGNED THRU 2027 + 2028 CLUB OPTION / 2029 CLUB OPTION
Acquired
Drafted 4th Rd '18
Outrighted / DFA'd before
0 / 0
Contract
5 yr, $20.5M (2023-27), 2028-29 club options

Next 90 days, by the model

Stays put
98%
Designated
<1%
Optioned
<1%
Traded
2%
Released or non-tendered
<1%

Pushing the cut risk around: this season's WAR (1.46) lowers it, this season's innings (81.10) lowers it, this season's strikeout rate (0.31) lowers it.

Context the model does not weigh: ZiPS projects 0.8 WAR, 1.5 WAR this season; 15 RP on the 40-man, of whom JoJo Romero 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?

MIL returns 14 RP on the 40-man once 1 free agent leaves; about 9 RP jobs survive a normal winter. By his own recent record he ranks 3rd among the returners (2.0 WAR against a bar of 0.5), which the calibrated model turns into 99% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 6th (0.7 WAR, bar 0.3), worth 97% kept on the same model.

By recent record: returning RPProj. WAR
1. Trevor Megill3.5
2. Abner Uribe (mil)2.3
3. Aaron Ashby2.0
4. Chad Patrick1.7
5. Kyle Harrison1.4
6. Jared Koenig0.9
7. DL Hall0.6
8. Antonio Senzatela0.6
9. Garrett Stallingslast job0.5
10. Brian Fitzpatrick0.3
11. Angel Zerpa0.2
12. Rob Zastryzny0.1
By ZiPS / Steamer: returning RPProj. WAR
1. Chad Patrick1.5
2. Kyle Harrison1.1
3. Abner Uribe (mil)0.8
4. Trevor Megill0.7
5. Jared Koenig0.7
6. Aaron Ashby0.7
7. Angel Zerpa0.6
8. DL Hall0.4
9. Garrett Stallingslast job0.3
10. Rob Zastryzny0.2
11. Antonio Senzatela0.2
12. Bryse Wilson0.1

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 0 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. 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 (5 yr, $20.5M (2023-27), 2028-29 club options). 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. 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. The guaranteed years remain owed in full. 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
Let the season end
Under contract (5 yr, $20.5M (2023-27), 2028-29 club options): nothing to decide this winter. Moving him later means trading the contract or releasing him and paying the guaranteed years in full.
Release waivers and termination pay

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
2024151yesMar 22, 2024 to Apr 6, 2024 (15d)Apr 9, 2024 to Jun 5, 2024 (57d)Jun 7, 2024 to Aug 25, 2024 (79d)
202150yesJul 1, 2021 to Aug 10, 2021 (40d)Aug 11, 2021 to Aug 14, 2021 (3d)Aug 15, 2021 to Aug 22, 2021 (7d)

Transaction log

Jul 14, 2025Status changeMilwaukee Brewers activated LHP Aaron Ashby from the paternity list.
Jul 11, 2025Status changeMilwaukee Brewers placed LHP Aaron Ashby on the paternity list.
May 23, 2025Status changeMilwaukee Brewers activated LHP Aaron Ashby from the 15-day injured list.
Mar 27, 2025Status changeMilwaukee Brewers placed LHP Aaron Ashby on the 15-day injured list retroactive to March 24, 2025. Right oblique.
Aug 25, 2024Status changeMilwaukee Brewers placed LHP Aaron Ashby on the 15-day injured list. Right oblique.
Aug 25, 2024RecalledMilwaukee Brewers recalled LHP Aaron Ashby from Nashville Sounds.
Aug 25, 2024Status changeMilwaukee Brewers activated LHP Aaron Ashby.
Jun 7, 2024OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Jun 5, 2024RecalledMilwaukee Brewers recalled LHP Aaron Ashby from Nashville Sounds.
Apr 9, 2024OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Apr 6, 2024RecalledMilwaukee Brewers recalled LHP Aaron Ashby from Nashville Sounds.
Mar 22, 2024OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Nov 6, 2023Status changeMilwaukee Brewers activated LHP Aaron Ashby from the 60-day injured list.
Apr 9, 2023Status changeMilwaukee Brewers transferred LHP Aaron Ashby from the 15-day injured list to the 60-day injured list. Left shoulder inflammation.
Mar 29, 2023Status changeMilwaukee Brewers placed LHP Aaron Ashby on the 15-day injured list retroactive to March 27, 2023. Left shoulder inflammation.
Sep 20, 2022Status changeMilwaukee Brewers activated LHP Aaron Ashby from the 15-day injured list.
Aug 22, 2022Status changeMilwaukee Brewers placed LHP Aaron Ashby on the 15-day injured list retroactive to August 20, 2022. Left shoulder inflammation.
Jul 2, 2022Status changeMilwaukee Brewers activated LHP Aaron Ashby from the 15-day injured list.
Jun 20, 2022Status changeMilwaukee Brewers placed LHP Aaron Ashby on the 15-day injured list retroactive to June 17, 2022. Left forearm inflammation.
Aug 22, 2021RecalledMilwaukee Brewers recalled LHP Aaron Ashby, and from Nashville Sounds.
Aug 15, 2021OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Aug 14, 2021RecalledMilwaukee Brewers recalled LHP Aaron Ashby from Nashville Sounds.
Aug 11, 2021OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Aug 10, 2021RecalledMilwaukee Brewers recalled LHP Aaron Ashby from Nashville Sounds.
Jul 1, 2021OptionedMilwaukee Brewers optioned LHP Aaron Ashby to Nashville Sounds.
Jun 30, 2021Contract selectedMilwaukee Brewers selected the contract of LHP Aaron Ashby from Nashville Sounds.
Jun 15, 2018SignedMilwaukee Brewers signed LHP Aaron Ashby.

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.