Seth Martinez: Breaking News, Rumors & Highlights

Marlins outright reliever Seth Martinez

The Marlins assigned reliever Seth Martinez outright to Triple-A Jacksonville, according to the MLB.com transaction log. That indicates he cleared waivers after being designated for assignment on Wednesday.

Miami Marlins News / MLB Trade Rumors / March 26

Marlins designate Seth Martinez for assignment

The Marlins announced Wednesday that right-hander Seth Martinez has been designated for assignment. His spot on the 40-man roster goes to righty Tyler Phillips, whom Miami acquired from the Phillies in exchange for cash today.

Seattle Mariners News / Seattle Mariners on SI / March 15

Seattle Mariners Lose Veteran Pitcher, Open Up Spot on 40-Man Roster as a Result

The Seattle Mariners lost right-handed pitcher Seth Martinez in an apparent waiver claim on Saturday. First, the Mariners PR team announced that Martinez had been claimed off waivers by the Miami Marlins.

Chris Sale News / Yardbarker Quizzes

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MLB News / MLB Trade Rumors / March 15

Marlins claim veteran right-hander off waivers from Mariners

He only joined the Mariners on another waiver claim from Miami less than two weeks ago.

Marlins outfielder to miss at least four weeks with oblique strain

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Athletics News / Yardbarker

Who has the best lineup in all of MLB? All 30 ranked

The 2025 MLB season has started with a burst of offense, and the rules changes of recent seasons have made lineups even more athletic. Through the first two months of the season, here's a look at the lineups in the game from best to worst.

Seattle Mariners News / Seattle Mariners on SI / March 3

Seattle Mariners Claim Interesting Former Rival Off Waivers

The Seattle Mariners bullpen still has some open spots left heading into 2025, and the team added another arm to the mix on Sunday. The Mariners claimed right-handed reliever Seth Martinez off waivers from the Miami Marlins.

MLB News / MLB Trade Rumors / March 2

Mariners Claim Seth Martinez

The Mariners announced that right-hander Seth Martinez was claimed off waivers from the Marlins. Righty Jackson Kowar was placed on the 60-day injured list in Seattle’s corresponding roster move.

MLB News / Seattle Mariners on SI / February 28

Former Little-Used Seattle Mariners Pitcher Signs with Miami Marlins

Former Seattle Mariners reliever Brett de Geus signed a new contract with the Miami Marlins on Thursday. The Marlins Communications Department announced the move on social media: The Miami Marlins today claimed RHP Brett de Geus off waivers from the Pittsburgh Pirates.

MLB News / MLB Trade Rumors / February 27

Marlins claim righty Brett de Geus off waivers from Pirates

The Marlins announced that they have claimed right-hander Brett de Geus off waivers from the Pirates. The latter club designated him for assignment last week.

Athletics News / Yardbarker

Who has the best rotation in all of MLB? All 30 ranked

Pitching wins championships, and reliable starting pitching is becoming tougher to find in MLB. After two months of the 2025 regular season, here's a look at how the MLB rotations stack up from first to worst.

MLB News / MLB Trade Rumors / February 20