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Gregory Santos
Gregory Santos
Sacramento River Cats • Pitcher
Age 26 • 6' 3" • 236 lb
Bats: R • Throws: R
MLB Debut: 2021-04-22
Born: San Cristobal • Dominican Republic
2025 Stats
W
1
L
1
ERA
5.14
WHIP
2.29
IP
7.0
SO
0
SV
0
HLD
1
G
8
GS
0
Career Stats
W
3
L
6
ERA
4.17
WHIP
1.42
IP
86.1
SO
77
SV
5
HLD
10
G
81
GS
0
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2021 SF 3 — 2.0 — 2 — 3 22.50 3.50
2022 SF 2 — 3.2 — — — 2 4.91 1.64
2023 CWS 60 — 66.1 2 2 5 66 3.39 1.30
2024 SEA 8 — 7.1 — 1 — 6 4.91 1.09
2025 SEA 8 — 7.0 1 1 — — 5.14 2.29
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2021 SF 2—1.0 ———— 36.005.00
2023 CWS 8—9.1 ———8 1.931.07
2025 SEA 6—5.2 ———5 1.591.41
2026 SF 4—3.1 ———2 5.403.00
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2025-04-15 @ CIN 0.1 1 2 2 3 0 0
2025-04-12 vs TEX 1.0 2 1 1 0 0 0
2025-04-07 vs HOU 1.0 1 2 0 2 0 0
2025-04-06 @ SF 0.2 1 1 1 1 0 0
2025-04-04 @ SF 1.0 1 0 0 1 0 0
2025-04-01 vs DET 1.0 1 0 0 0 0 0
2025-03-30 vs ATH 1.0 0 0 0 0 0 0
2025-03-28 vs ATH 1.0 1 0 0 1 0 0
Transactions
Entire history • newest first.
2025-12-19
RHP Gregory Santos roster status changed by San Francisco Giants.
2025-12-19
San Francisco Giants signed free agent RHP Gregory Santos to a minor league contract.
2025-12-19
RHP Gregory Santos roster status changed by San Francisco Giants.
2025-11-21
RHP Gregory Santos elected free agency.
2025-11-05
Seattle Mariners activated RHP Gregory Santos from the 60-day injured list.
2025-09-06
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2025-09-06
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2025-04-29
Seattle Mariners placed RHP Gregory Santos on the 60-day injured list.
2025-04-16
RHP Gregory Santos changed number to 48.
2025-04-16
Seattle Mariners optioned RHP Gregory Santos to Tacoma Rainiers.
2025-04-15
RHP Gregory Santos changed number to 42.
2024-09-23
Seattle Mariners activated RHP Gregory Santos from the 15-day injured list.
2024-09-06
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2024-09-06
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2024-08-02
Seattle Mariners placed RHP Gregory Santos on the 15-day injured list retroactive to August 1, 2024. Right biceps inflammation.
2024-07-08
Seattle Mariners activated RHP Gregory Santos from the 60-day injured list.
2024-07-06
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Everett AquaSox.
2024-07-02
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2024-07-02
Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers.
2024-04-25
Seattle Mariners transferred RHP Gregory Santos from the 15-day injured list to the 60-day injured list. Right latissimus dorsi strain.
2024-03-28
Seattle Mariners placed RHP Gregory Santos on the 15-day injured list retroactive to March 25, 2024. Right latissimus dorsi strain.
2024-02-03
Seattle Mariners activated RHP Gregory Santos.
2024-02-03
Chicago White Sox traded RHP Gregory Santos to Seattle Mariners for RHP Prelander Berroa, OF Zach DeLoach and Future Considerations.
2023-10-02
Chicago White Sox activated RHP Gregory Santos from the 15-day injured list.
2023-09-20
Chicago White Sox placed RHP Gregory Santos on the 15-day injured list. Right elbow inflammation.
2023-08-08
Chicago White Sox activated RHP Gregory Santos from the bereavement list.
2023-08-05
Chicago White Sox placed RHP Gregory Santos on the bereavement list.
2022-12-22
Chicago White Sox activated RHP Gregory Santos.
2022-12-22
San Francisco Giants traded RHP Gregory Santos to Chicago White Sox.
2022-12-19
San Francisco Giants designated RHP Gregory Santos for assignment.
2022-11-10
San Francisco Giants activated RHP Gregory Santos.
2022-08-23
San Francisco Giants transferred RHP Gregory Santos from the 7-day injured list to the 60-day injured list.
2022-07-26
San Francisco Giants optioned RHP Gregory Santos to Sacramento River Cats.
2022-07-24
San Francisco Giants recalled RHP Gregory Santos from Sacramento River Cats.
2022-05-08
San Francisco Giants optioned RHP Gregory Santos to Sacramento River Cats.
2022-05-05
San Francisco Giants recalled RHP Gregory Santos from Sacramento River Cats.
2022-03-25
San Francisco Giants optioned RHP Gregory Santos to Sacramento River Cats.
2021-10-15
San Francisco Giants activated RHP Gregory Santos.
2021-10-04
San Francisco Giants recalled RHP Gregory Santos from Sacramento River Cats.
2021-06-29
San Francisco Giants placed RHP Gregory Santos on the restricted list.
2021-04-28
San Francisco Giants optioned RHP Gregory Santos to Giants Alternate Training Site.
2021-04-22
San Francisco Giants recalled RHP Gregory Santos from Giants Alternate Training Site.
2021-03-15
San Francisco Giants optioned P Gregory Santos to Eugene Emeralds.
2020-11-21
San Francisco Giants selected the contract of RHP Gregory Santos.
2020-11-20
San Francisco Giants selected the contract of RHP Gregory Santos from Augusta GreenJackets.
2017-07-26
San Francisco Giants traded 3B Eduardo Nunez to Boston Red Sox for RHP Gregory Santos and RHP Shaun Anderson.
2015-08-28
Boston Red Sox signed free agent RHP Gregory Santos to a minor league contract.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2025
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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