Brett Harris

INF · R/R · age 28.2 · SF

OCTOBER: SUB ONLY

Roster status
ACTIVE
Service thru 2025
0+105
Service now / projected
0+143 / 0+156
Option years left (2026)
1 (using one in 2026)
Assignments left this season
2 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Waivers (BOS) Sep'26
Outrighted / DFA'd before
0 / 2
Contract
none listed

Next 90 days, by the model

Stays put
36%
Designated
41%
Optioned
21%
Traded
1%
Released or non-tendered
1%

Pushing the cut risk up: this season's WAR (-0.03) raises it, DFAs in the last year (2) raises it, time with the club (11) raises it.

Context the model does not weigh: ZiPS projects 1.6 WAR, -0.0 WAR this season; 13 OF 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?

SF returns 15 IF on the 40-man once nobody leaves; about 8 IF jobs survive a normal winter. By his own recent record he ranks 9th among the returners (0.3 WAR against a bar of 0.3), which the calibrated model turns into 65% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 7th (0.9 WAR, bar 0.8), worth 71% kept on the same model.

By recent record: returning IFProj. WAR
1. Matt Chapman3.2
2. Rafael Devers2.9
3. Jonah Cox2.2
4. Willy Adames2.1
5. Casey Schmitt1.8
6. Bryce Eldridge1.5
7. Christian Koss1.2
8. Marcelo Mayerlast job0.3
9. Brett Harris0.3
10. Scott Bandura0.1
11. Zach Morgan0.0
12. Jesus E. Rodriguez-0.1
By ZiPS / Steamer: returning IFProj. WAR
1. Matt Chapman3.8
2. Willy Adames3.6
3. Rafael Devers2.9
4. Jesus E. Rodriguez1.4
5. Shay Whitcomb1.1
6. Casey Schmitt0.9
7. Brett Harris0.9
8. Marcelo Mayerlast job0.8
9. Christian Koss0.7
10. Osleivis Basabe0.6
11. Nate Furman0.5
12. Jonah Cox0.4

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: Injury replacement only

Added to the 40-man on Sep 3, after the Sep 1 noon cutoff, so he is not automatically eligible. He was not in the organization before the cutoff, so he cannot be added to a post-season roster this year.

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. 2 of the five optional assignments for 2026 remain. A 2026 option year is already used (136 days), so further trips this season cost nothing extra. Once down he must stay 10 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. 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.
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
2026136yesMar 9, 2026 to Apr 28, 2026 (34d, spring training)May 12, 2026 to Jun 27, 2026 (46d)Jul 11, 2026 to Sep 1, 2026 (52d)Sep 4, 2026 to Sep 8, 2026 (4d)
2025134yesApr 3, 2025 to Aug 15, 2025 (134d)
2024100yesMay 24, 2024 to Jul 2, 2024 (39d)Aug 1, 2024 to Mar 25, 2025 (61d)

Transaction log

Sep 8, 2026RecalledSan Francisco Giants recalled 3B Brett Harris from Sacramento River Cats.
Sep 3, 2026OptionedSan Francisco Giants optioned 3B Brett Harris to Sacramento River Cats.
Sep 3, 2026Claimed off waiversSan Francisco Giants claimed 3B Brett Harris off waivers from Boston Red Sox.
Sep 1, 2026Designated for assignmentBoston Red Sox designated 3B Brett Harris for assignment.
Jul 11, 2026OptionedBoston Red Sox optioned 3B Brett Harris to Worcester Red Sox.
Jul 9, 2026RecalledBoston Red Sox recalled 3B Brett Harris from Worcester Red Sox.
Jul 1, 2026TradedAthletics traded 3B Brett Harris to Boston Red Sox for RHP Ben Hansen.
Jun 27, 2026Designated for assignmentAthletics designated 3B Brett Harris for assignment.
May 12, 2026OptionedAthletics optioned 3B Brett Harris to Las Vegas Aviators.
Apr 28, 2026RecalledAthletics recalled 3B Brett Harris from Las Vegas Aviators.
Mar 9, 2026OptionedAthletics optioned 3B Brett Harris to Las Vegas Aviators.
Aug 15, 2025RecalledAthletics recalled 3B Brett Harris from Las Vegas Aviators.
Apr 3, 2025OptionedAthletics optioned 3B Brett Harris to Las Vegas Aviators.
Mar 25, 2025Status changeAthletics placed 3B Brett Harris on the 10-day injured list retroactive to March 24, 2025. Left oblique strain.
Nov 4, 2024Status changeAthletics activated 3B Brett Harris.
Aug 2, 2024OptionedOakland Athletics optioned 3B Brett Harris to Las Vegas Aviators.
Aug 1, 2024OptionedOakland Athletics optioned 3B Brett Harris to Las Vegas Aviators.
Jul 2, 2024RecalledOakland Athletics recalled 3B Brett Harris from Las Vegas Aviators.
May 24, 2024OptionedOakland Athletics optioned 3B Brett Harris to Las Vegas Aviators.
May 3, 2024Contract selectedOakland Athletics selected the contract of 3B Brett Harris from Las Vegas Aviators.
Jul 21, 2021SignedOakland Athletics signed 3B Brett Harris.

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.