Brett Harris
INF · R/R · age 28.2 · SFOCTOBER: SUB ONLY
ACTIVE
0+105
0+143 / 0+156
1 (using one in 2026)
2 of 5
PRE-ARBITRATION / AUTO-RENEWAL
Waivers (BOS) Sep'26
0 / 2
none listed
Next 90 days, by the model
36%
41%
21%
1%
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 IF | Proj. WAR |
|---|---|
| 1. Matt Chapman | 3.2 |
| 2. Rafael Devers | 2.9 |
| 3. Jonah Cox | 2.2 |
| 4. Willy Adames | 2.1 |
| 5. Casey Schmitt | 1.8 |
| 6. Bryce Eldridge | 1.5 |
| 7. Christian Koss | 1.2 |
| 8. Marcelo Mayerlast job | 0.3 |
| 9. Brett Harris | 0.3 |
| 10. Scott Bandura | 0.1 |
| 11. Zach Morgan | 0.0 |
| 12. Jesus E. Rodriguez | -0.1 |
| By ZiPS / Steamer: returning IF | Proj. WAR |
|---|---|
| 1. Matt Chapman | 3.8 |
| 2. Willy Adames | 3.6 |
| 3. Rafael Devers | 2.9 |
| 4. Jesus E. Rodriguez | 1.4 |
| 5. Shay Whitcomb | 1.1 |
| 6. Casey Schmitt | 0.9 |
| 7. Brett Harris | 0.9 |
| 8. Marcelo Mayerlast job | 0.8 |
| 9. Christian Koss | 0.7 |
| 10. Osleivis Basabe | 0.6 |
| 11. Nate Furman | 0.5 |
| 12. Jonah Cox | 0.4 |
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 and the 20-day rule1 option year left entering 2026; 136 option days this season uses one (0 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 3 times this season that count toward the cap of 5: 2 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))
- Post-season roster eligibilityAdded 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. 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 2024 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2026 | 136 | yes | Mar 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) |
| 2025 | 134 | yes | Apr 3, 2025 to Aug 15, 2025 (134d) |
| 2024 | 100 | yes | May 24, 2024 to Jul 2, 2024 (39d)Aug 1, 2024 to Mar 25, 2025 (61d) |
Transaction log
| Sep 8, 2026 | Recalled | San Francisco Giants recalled 3B Brett Harris from Sacramento River Cats. |
| Sep 3, 2026 | Optioned | San Francisco Giants optioned 3B Brett Harris to Sacramento River Cats. |
| Sep 3, 2026 | Claimed off waivers | San Francisco Giants claimed 3B Brett Harris off waivers from Boston Red Sox. |
| Sep 1, 2026 | Designated for assignment | Boston Red Sox designated 3B Brett Harris for assignment. |
| Jul 11, 2026 | Optioned | Boston Red Sox optioned 3B Brett Harris to Worcester Red Sox. |
| Jul 9, 2026 | Recalled | Boston Red Sox recalled 3B Brett Harris from Worcester Red Sox. |
| Jul 1, 2026 | Traded | Athletics traded 3B Brett Harris to Boston Red Sox for RHP Ben Hansen. |
| Jun 27, 2026 | Designated for assignment | Athletics designated 3B Brett Harris for assignment. |
| May 12, 2026 | Optioned | Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| Apr 28, 2026 | Recalled | Athletics recalled 3B Brett Harris from Las Vegas Aviators. |
| Mar 9, 2026 | Optioned | Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| Aug 15, 2025 | Recalled | Athletics recalled 3B Brett Harris from Las Vegas Aviators. |
| Apr 3, 2025 | Optioned | Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| Mar 25, 2025 | Status change | Athletics placed 3B Brett Harris on the 10-day injured list retroactive to March 24, 2025. Left oblique strain. |
| Nov 4, 2024 | Status change | Athletics activated 3B Brett Harris. |
| Aug 2, 2024 | Optioned | Oakland Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| Aug 1, 2024 | Optioned | Oakland Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| Jul 2, 2024 | Recalled | Oakland Athletics recalled 3B Brett Harris from Las Vegas Aviators. |
| May 24, 2024 | Optioned | Oakland Athletics optioned 3B Brett Harris to Las Vegas Aviators. |
| May 3, 2024 | Contract selected | Oakland Athletics selected the contract of 3B Brett Harris from Las Vegas Aviators. |
| Jul 21, 2021 | Signed | Oakland 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.