2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
Signed a minor-league contract with the Giants in December of 2025.
Moved to minor-league camp
The Giants sent Santos to minor-league camp Friday, Susan Slusser of the San Francisco Chronicle reports.
Analysis
Santos received an invite to spring camp, but he'll fall short of making the big-league roster. The 25-year-old allowed five runs (two earned) with a 2:5 K:BB in 3.1 innings this spring.
Santos received an invite to spring camp, but he'll fall short of making the big-league roster. The 25-year-old allowed five runs (two earned) with a 2:5 K:BB in 3.1 innings this spring.
Pitching Stats
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Minor League Game Log
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Left/Right Pitching Splits
Since 2024
-43%
BAA vs RHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .364 | 4 | 6 | 8 | 0 |
| Since 2024vs Right | .206 | 2 | 3 | 7 | 0 |
| 2026vs Left | 0 | 0 | 0 | 0 | 0 |
| 2026vs Right | 0 | 0 | 0 | 0 | 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
-41%
ERA at Home
2026
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |
|---|---|---|---|---|---|
| Since 2024Home | 4.00 | 1.44 | 9.0 | 2.0 | 3.0 |
| Since 2024Away | 6.75 | 2.06 | 5.1 | 6.8 | 10.1 |
| 2026Home | 0 | 0 | 0 | 0 | 0 |
| 2026Away | 0 | 0 | 0 | 0 | 0 |
| 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 |
Minor League Left/Right Pitching Splits (AAA)
Since 2024
-17%
BAA vs LHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .167 | 6 | 6 | 3 | 0 |
| Since 2024vs Right | .200 | 6 | 10 | 4 | 0 |
| 2026vs Left | 0 | 0 | 0 | 0 | 0 |
| 2026vs Right | 0 | 0 | 0 | 0 | 0 |
| 2025vs Left | .143 | 3 | 3 | 1 | 0 |
| 2025vs Right | .300 | 2 | 6 | 3 | 0 |
| 2024vs Left | .182 | 3 | 3 | 2 | 0 |
| 2024vs Right | .100 | 4 | 4 | 1 | 0 |
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
0.00K/9
0.0BB/9
10.3HR/9
0.0Fastball
97.3 mphERA
5.14WHIP
2.29BABIP
.288GB/FB
3.40Left On Base
62.5%Exit Velocity
82.6 mphBarrels/BBE
4.3%Spin Rate
2444 rpmBalls Hit 95+ MPH
27.7%Swinging Strike
4.3%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
Issues two walks in spring debut
Santos allowed two hits and two walks across one scoreless inning during Monday's 6-2 Cactus League win over the Athletics.
Analysis
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Signs with Giants as NRI
Santos signed a minor-league contract with the Giants on Tuesday that includes an invitation to spring training, Francys Romero of BeisbolFR.com reports.
Analysis
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Gets non-tendered by Mariners
The Mariners non-tendered Santos (knee) on Friday, Francys Romero of BeisbolFR.com reports.
Analysis
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Beginning rehab assignment
Santos (knee) is slated to begin a minor-league rehab assignment with Triple-A Tacoma on Saturday, Shannon Drayer of SeattleSports.com reports.
Analysis
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Aiming for mid-September return
Santos (knee) is expected to begin a rehab assignment soon and is hopeful to return in mid-September, Adam Jude of The Seattle Times reports.
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.