Gregory Santos
RP SEA
Tue 12/16/25 3:28 PM

The Giants signed Santos to a minor-league contract with an invitation to spring training Tuesday, Francys Romero of BeisbolFR.com reports.
EDGE Analysis
Santos first reached the majors with the Giants in 2021 before being traded to the White Sox three years ago. The 26-year-old had a tough time with injuries the past two seasons with the Mariners, making a total of only 16 appearances due to arm and knee problems. Santos is recovered from April arthroscopic right knee surgery and has a chance to win a spot in the Giants' bullpen.

Gregory Santos
RP SEA
Fri 11/21/25 5:02 PM

The Mariners non-tendered Santos (knee) on Friday, Francys Romero of BeisbolFR.com reports.
EDGE Analysis
Santos made just eight appearances for Seattle and six appearances on a rehab assignment in 2025 due to right knee surgery. He was pitching by the end of the season, so the reliever should be healthy heading into spring training, but the Mariners opted against tending him a contract. Santos appeared in only 16 games in two years in Seattle due to injuries.

Gregory Santos
RP SEA
Sat 9/6/25 4:59 PM

Santos (knee) is slated to begin a minor-league rehab assignment with Triple-A Tacoma on Saturday, Shannon Drayer of SeattleSports.com reports.
EDGE Analysis
Santos hasn't pitched with Seattle since April 15 but is aiming for a return to the Mariners at some point this month. The right-hander struggled to a 5.14 ERA and 2.29 WHIP across eight early-season appearances before getting hurt.

Gregory Santos
RP SEA
Fri 8/22/25 6:42 PM

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.
EDGE Analysis
Santos has been sidelined since late April with a knee injury that required surgery. The 25-year-old is getting close to pitching in games, but he'll require a lengthy minor-league rehab assignment before being activated from the 60-day injured list. Santos has a 5.14 ERA in seven big-league innings this season.

Gregory Santos
RP SEA
Tue 7/1/25 10:22 AM

Mariners general manager Justin Hollander said Monday that Santos (knee) threw three "light bullpens" last week, Circling Seattle Sports reports.
EDGE Analysis
The hope is that Santos can return to the Mariners' bullpen before the end of July, but it's a rough timeline. Santos has been sidelined since late April with right knee inflammation and will need a rehab assignment before being activated from the 60-day injured list.

Gregory Santos
RP SEA
Tue 4/29/25 4:34 PM

Santos (knee) was transferred to the 60-day injured list by Seattle on Tuesday.
EDGE Analysis
Santos is dealing with right knee inflammation. The Mariners needed his 40-man roster spot in order to select Samad Taylor's contract from Triple-A Tacoma.

Gregory Santos
RP SEA
Fri 4/25/25 5:34 PM

The Mariners placed Santos on the 15-day injured list Friday with right knee inflammation.
EDGE Analysis
Santos was sent to Triple-A Tacoma on April 16 but is listed on the major-league injured list. He won't be eligible to return until May 10, and right now it's unclear if his knee will keep him out for more than the 15-day minimum.

Gregory Santos
RP SEA
Wed 4/16/25 3:14 PM

The Mariners optioned Santos to Triple-A Tacoma on Wednesday, Daniel Kramer of MLB.com reports.
EDGE Analysis
The Mariners had high hopes that a finally healthy Santos could be a weapon in their bullpen this season, but he has struggled mightily, posting a 5.14 ERA and ugly 0:8 K:BB over seven innings. Will Klein is absorbing his spot in the Seattle bullpen.

Gregory Santos
RP SEA
Mon 2/3/25 5:44 PM

Mariners president of baseball operations Jerry Dipoto said Monday that Santos has already reported to the team's spring training complex and has been throwing bullpen sessions, Ryan Divish of The Seattle Times reports.
EDGE Analysis
Santos made only eight appearances for Seattle in 2024 due to multiple arm issues, but he finished the season healthy and will head into spring training without limitations. The 25-year-old can be a key member of the Mariners' bullpen if he can stay on the bump, but he's a major health risk.

Gregory Santos
RP SEA
Mon 9/30/24 1:08 PM

Santos, who was activated from the injured list last Monday, subsequently made two relief appearances during which he fired two scoreless innings while allowing one hit and recording one strikeout.
EDGE Analysis
Santos got back on the bump at the major-league level for the first time since July 31 when he earned his second hold with a scoreless seventh inning in the series opener against the Athletics on Friday. He logged one more frame during Sunday's regular-season finale, getting through the eighth inning on just nine pitches. It was a modest but encouraging season-ending sample for Santos, who didn't make his 2024 debut until July due to a lat strain and then missed nearly two months with a biceps injury. The hard-throwing right-hander played on a one-year deal this season, and it remains to be seen if the Mariners will want to take another look considering Santos logged all of 7.1 innings across eight appearances due to the injuries.