Gregory Santos: Breaking News, Rumors & Highlights

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Right-hander Gregory Santos has rejected an outright assignment to Triple-A Sacramento and will instead become a free agent, per Susan Slusser of the San Francisco Chronicle.

MLB News / MLB Trade Rumors / July 6

Giants Claim Eric Cerantola, Outright Gregory Santos

The Giants have claimed right-hander Eric Cerantola off waivers from the Royals, according to his transactions tracker at MLB.com. The Royals designated him for assignment last week.

MLB News / Seattle Mariners on SI / April 30

Former Mariners Bullpen Gamble Gets New Life With Giants After Injury-Riddled Stint

Gregory Santos’ return to the Giants is not a major Mariners regret story, at least not yet. It’s more of a reminder of how quickly a sensible bullpen gamble can disappear when injuries take over.

Andrew Benintendi News / Yardbarker Quizzes

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MLB News / New Baseball Media / April 29

2026 Transactions: Giants Promote Santos, Yankees DFA Grichuk

San Francisco added bullpen help on the 29th of April, as Gregory Santos was called up. The move brings the reliever back to the Majors, while Jarred Kelenic was also promoted on the day.

Athletics News / Yardbarker

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San Francisco Giants News / MLB Trade Rumors / April 29

Giants To Select Gregory Santos

The Giants will select the contract of right-handed reliever Gregory Santos from Triple-A Sacramento today, reports Francys Romero of BeisbolFR.com. San Francisco has a full 40-man roster and will need to make a corresponding transaction.

Seattle Mariners News / MLB Trade Rumors / December 17

Giants, Gregory Santos Agree To Minor League Deal

The Giants have agreed to a minor league deal with right-handed reliever Gregory Santos, as first reported by Mike Rodriguez. He’ll be in major league camp as a non-roster invitee next spring.

MLB News / Fastball on SI / December 16

Mariners Lose 26-Year-Old Pitcher To Giants In Free Agency

The Seattle Mariners' bullpen was generally quite good this season, but not everyone who threw innings lived up to that identity. One pitcher who was a disappointment, because he'd had success for the Mariners in the past, was right-hander Gregory Santos.

Seattle Mariners News / Lookout Landing / November 21

Mariners non-tender three relievers ahead of Friday’s deadline

The Seattle Mariners announced Friday that they have tendered contracts to 31 of their 34 eligible players. The three players not tendered contract offers are RHP Gregory Santos, RHP Trent Thornton, and LHP Tayler Saucedo, meaning each player is now a free agent.

Seattle Mariners News / Seattle Mariners on SI / August 22, 2025

Flame-Throwing Seattle Mariners Reliever Near Return After Lengthy Layoff

SEATTLE — There hasn't been a unit on the Seattle Mariners roster that's been more chaotic than the bullpen this season. Due to the several injuries and inconsistencies from the starting rotation, the Mariners' bullpen has been relied on heavily.

Seattle Mariners News / Lookout Landing / August 22, 2025

Mariners injury updates: Dominic Canzone, Logan Evans, Ryan Bliss, Gregory Santos, more

Prior to the current homestand, Mariners GM Justin Hollander provided some updates on players dealing with injuries across the system. OF Dominic Canzone is “feeling better” after being hit in the wrist/hand area by a pitch in Monday’s loss against Philadelphia, but remains out of the lineup tonight.

MLB News / Yardbarker

The most disappointing player from every MLB team for the 2026 season

The 2026 season hasn't gone as planned for many MLB players. These 30 players stand out as the biggest disappointments for their respective teams.

Seattle Mariners News / Seattle Mariners on SI / August 6, 2025

Oft-Injured Seattle Mariners Reliever Could Factor into Team's Bullpen Plans Rest of Way

Gregory Santos, who has frustratingly missed most of the last two Seattle Mariners seasons, could factor into the team's bullpen down the stretch as they push for a playoff spot.

Seattle Mariners News / Seattle Mariners on SI / July 1, 2025

Gregory Santos Working Back For Seattle Mariners After Knee Surgery

SEATTLE — One of the hardest-throwing relievers in the Seattle Mariners organization is getting closer to a return. Right-handed hurler Gregory Santos has been on the 60-day injured list since April 29 due to an operation in his right knee.

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Seattle Mariners News / Seattle Mariners on SI / April 29, 2025

Seattle Mariners Make Big Roster Decision with Frustrating Former Trade Acquisition

The Seattle Mariners made a big roster decision with reliever Gregory Santos on Tuesday, transferring him from the 15-day to the 60-day injured list. Santos has undergone knee surgery and will now be out for two months, at minimum.

Seattle Mariners News / MLB Trade Rumors / April 29, 2025

Mariners select versatile IF/OF as red-hot Gold Glove winner hits IL

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Seattle Mariners News / Seattle Mariners on SI / April 26, 2025

Seattle Mariners Provide Welcome Injury Update on Offensive Catalyst

Friday was a tough day on the injury front for the Seattle Mariners. First, the M's announced that hard-throwing reliever Gregory Santos is undergoing knee surgery.

Seattle Mariners News / MLB Trade Rumors / April 25, 2025

Mariners pitcher to undergo knee surgery

The return timeline isn’t clear, though GM Justin Hollander said the team expects he’ll make it back before the end of the season.

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Seattle Mariners News / Minor League Baseball on SI / April 25, 2025

Recently-Optioned Seattle Mariners Reliever Set to Undergo Right Knee Surgery

SEATTLE — The Seattle Mariners bullpen has been the most chaotic unit on the team since the season began. The Mariners had two relievers, Troy Taylor and Matt Brash, started the season on the 15-day injured list.

Seattle Mariners News / MLB Trade Rumors / April 16, 2025

RHP Gregory Santos optioned to minors for first time in years

The Mariners have optioned right-hander Gregory Santos to Triple-A Tacoma and recalled fellow right-handed reliever Will Klein in his place.

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Seattle Mariners News / Inside The Diamonds / April 16, 2025

Seattle Mariners Roster Moves 4/16

The Seattle Mariners bullpen has struggled to start the 2025 season, and they are looking for a solution. One pitcher who has struggled is Gregory Santos.

Seattle Mariners News / Seattle Mariners on SI / April 16, 2025

Gregory Santos Could See Himself Sent Down to Triple-A Soon For Seattle Mariners

When the Seattle Mariners acquired hard-throwing reliever Gregory Santos from the Chicago White Sox before the 2024 season, the M's thought they were getting a power arm to use in high-leverage situations alongside Matt Brash and Andres Munoz.

Seattle Mariners News / Seattle Mariners on SI / March 13, 2025

Seattle Mariners Reliever Gregory Santos and His Jordan Shoes Ready For Healthy Season in 2025

PEORIA, Ariz. — The Seattle Mariners bullpen was dealt a bad hand with injuries and inconsistencies in 2024. And one of the relievers afflicted with the most ailments was right-hander Gregory Santos.

Seattle Mariners News / Fastball on SI / March 12, 2024

Seattle Mariners' New Bullpen Arm Will Start Season on Injured List

Seattle Mariners' reliever Gregory Santos will start the year on the injured list after he suffered a setback in recovery from a lat issue. Per Shannon Drayer of Seattle Sports 710: Gregory Santos was scratched from a bullpen yesterday after feeling a pinch in his lat area.