Kyle Harrison

RP · R/L · age 25.1 · MIL

OCTOBER OK

Roster status
ACTIVE
Service thru 2025
1+102
Service now / projected
2+102 / 2+102
Option years left (2026)
2
Assignments left this season
5 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Trade (BOS) Feb'26
Outrighted / DFA'd before
0 / 0
Contract
1 yr, $786.1k (2026)

Next 90 days, by the model

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

Pushing the cut risk around: this season's WAR (1.63) lowers it, this season's innings (110.20) lowers it, age (25.09) lowers it.

Context the model does not weigh: ZiPS projects 1.3 WAR, 1.6 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 5th among the returners (1.4 WAR against a bar of 0.5), which the calibrated model turns into 100% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 2nd (1.1 WAR, bar 0.3), worth 100% 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, 2 option years 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.
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, $786.1k (2026)). If he clears, the club can outright him to the minors and he has no say; he stays under club control on a minor-league deal. He would then be Rule 5-eligible and would hold XX-D rights against any future outright. 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
2025131yesMar 22, 2025 to May 5, 2025 (44d)Jun 15, 2025 to Sep 10, 2025 (87d, within 24h of trade)
20235no (under 20)Sep 15, 2023 to Sep 20, 2023 (5d)

Transaction log

Aug 5, 2026Status changeMilwaukee Brewers activated LHP Kyle Harrison from the 15-day injured list.
Jul 11, 2026Status changeMilwaukee Brewers placed LHP Kyle Harrison on the 15-day injured list retroactive to July 9, 2026. Left forearm tightness.
Feb 9, 2026TradedBoston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations.
Sep 10, 2025RecalledBoston Red Sox recalled LHP Kyle Harrison from Worcester Red Sox.
Jun 15, 2025OptionedBoston Red Sox optioned LHP Kyle Harrison to Worcester Red Sox.
Jun 15, 2025TradedBoston Red Sox traded DH Rafael Devers to San Francisco Giants for LHP Kyle Harrison, RHP Jordan Hicks, RHP Jose Bello and RF James Tibbs III.
May 5, 2025RecalledSan Francisco Giants recalled LHP Kyle Harrison from Sacramento River Cats.
Mar 22, 2025OptionedSan Francisco Giants optioned LHP Kyle Harrison to Sacramento River Cats.
Oct 1, 2024Status changeSan Francisco Giants activated LHP Kyle Harrison from the 15-day injured list.
Sep 6, 2024Status changeSan Francisco Giants placed LHP Kyle Harrison on the 15-day injured list retroactive to September 4, 2024. Left shoulder impingement.
Jul 6, 2024Status changeSan Francisco Giants activated LHP Kyle Harrison from the 15-day injured list.
Jun 16, 2024Status changeSan Francisco Giants placed LHP Kyle Harrison on the 15-day injured list retroactive to June 13, 2024. Right ankle sprain.
Sep 20, 2023RecalledSan Francisco Giants recalled LHP Kyle Harrison from Sacramento River Cats.
Sep 15, 2023OptionedSan Francisco Giants optioned LHP Kyle Harrison to Sacramento River Cats.
Aug 22, 2023Contract selectedSan Francisco Giants selected the contract of LHP Kyle Harrison from Sacramento River Cats.
Jul 16, 2020SignedSan Francisco Giants signed LHP Kyle Harrison.

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.