Gregory Santos
27-Year-Old
Free Agent
2026 Stats
W-L
0-0
ERA
3.60
WHIP
1.60
K
1
SV
0
Rest-of-Season Projections
Signed a one-year contract with the Giants in December of 2025. Elected free agency in July of 2026.
Reaches free agency
Santos elected to become a free agent Wednesday, Susan Slusser of the San Francisco Chronicle reports.
Analysis
Santos cleared waivers after being booted off the Giants' 40-man roster, but he's opted to test out free agency rather than accept an outright assignment. The 26-year-old reliever has allowed five runs (two earned) over five innings in the majors this season and holds a 6.89 ERA and 11:11 K:BB over 15.2 frames at Triple-A Sacramento.
Santos cleared waivers after being booted off the Giants' 40-man roster, but he's opted to test out free agency rather than accept an outright assignment. The 26-year-old reliever has allowed five runs (two earned) over five innings in the majors this season and holds a 6.89 ERA and 11:11 K:BB over 15.2 frames at Triple-A Sacramento.
Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2023
2022
2021
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
29
Last 10 Games
29
Last 5 Games
29
How many pitches does Gregory Santos generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Gregory Santos generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2024
-58%
BAA vs RHP
2026
-85%
BAA vs RHP
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .414 | 5 | 8 | 12 | 0 |
| Since 2024vs Right | .174 | 2 | 4 | 8 | 0 |
| 2026vs Left | .571 | 1 | 2 | 4 | 0 |
| 2026vs Right | .083 | 0 | 1 | 1 | 0 |
| 2025vs Left | .333 | 0 | 5 | 3 | 0 |
| 2025vs Right | .278 | 0 | 3 | 5 | 0 |
| 2024vs Left | .385 | 4 | 1 | 5 | 0 |
| 2024vs Right | .125 | 2 | 0 | 2 | 0 |
Home/Away Pitching Splits
Since 2024
-15%
ERA at Home
2026
-100%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |
|---|---|---|---|---|---|
| Since 2024Home | 4.38 | 1.46 | 12.1 | 1.5 | 2.9 |
| Since 2024Away | 5.14 | 2.00 | 7.0 | 6.4 | 10.3 |
| 2026Home | 5.40 | 1.50 | 3.1 | 0.0 | 2.7 |
| 2026Away | 0.00 | 1.80 | 1.2 | 5.4 | 10.8 |
| 2025Home | 1.80 | 1.60 | 5.0 | 0.0 | 5.4 |
| 2025Away | 13.50 | 4.00 | 2.0 | 0.0 | 22.5 |
| 2024Home | 6.75 | 1.25 | 4.0 | 4.5 | 0.0 |
| 2024Away | 2.70 | 0.90 | 3.1 | 10.8 | 2.7 |
Stat Review
How does Gregory Santos compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
0.33K/9
1.8BB/9
5.4HR/9
0.0Fastball
97.0 mphERA
3.60WHIP
1.60BABIP
.276GB/FB
2.25Left On Base
37.5%Exit Velocity
83.7 mphBarrels/BBE
0.0%Spin Rate
2409 rpmBalls Hit 95+ MPH
30.3%Swinging Strike
1.2%Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2025
2024
Santos was acquired by Seattle to deepen its bullpen prior to the 2024 season, but a variety of injuries limited Santos to just over seven innings of work on the season. He missed two months with right bicep inflammation related to a nerve issue, and previously missed more than three months with a severe lat strain. This all came on the heels of his 2023 season ending early with right elbow inflammation. To be sure, strains and inflammations are the last thing you want to see from a hard-throwing reliever, especially one so reliant on a dastardly slider. The lost time and injury risk have likely led to Santos moving down from the primary setup man or potential closer to someone more likely to work in specific leverage situations against righty-heavy lineups unless something changes with his repertoire and his health. The Seattle bullpen is not exactly set it stone, so anything is possible if Santos's body doesn't let him down once again.
More Fantasy News
Sent outright to Triple-A
The Giants outrighted Santos to Triple-A Sacramento on Monday.
Analysis
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Activated from IL
Santos (adductor) was reinstated from Triple-A Sacramento's 7-day injured list Wednesday, and he allowed three earned runs on two hits and three walks while striking out one over two-thirds of an inning in Friday's 13-6 win over Las Vegas.
Analysis
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Begins rehab assignment
Santos (adductor) allowed one earned run on two hits and one walk while striking out one over one inning during the ACL Giants' 7-4 loss to the ACL Athletics in the rookie-level Arizona Complex League on Friday.
Analysis
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On mend from adductor strain
Triple-A Sacramento placed Santos on its 7-day injured list May 26 due to a right adductor strain, MLB.com reports.
Analysis
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Returns to Triple-A
The Giants optioned Santos to Triple-A Sacramento on Sunday.
Analysis
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Latest Fantasy Rumors
Could make $1.3 million in MLB
Santos' minor-league contract with the Giants will pay him $1.3 million if he makes the Opening Day roster, reports Francys Romero of BeisbolFR.com.
Analysis
The right-hander posted a 3.39 ERA in 60 appearances with the White Sox in 2023, but after being traded to the Mariners he has struggled to stay healthy the past two seasons. Santos will likely need a strong showing during spring training to secure a roster spot, but he could be a valuable bullpen piece for San Francisco if he can get back on track.
The right-hander posted a 3.39 ERA in 60 appearances with the White Sox in 2023, but after being traded to the Mariners he has struggled to stay healthy the past two seasons. Santos will likely need a strong showing during spring training to secure a roster spot, but he could be a valuable bullpen piece for San Francisco if he can get back on track.