Marlins Designate Osvaldo Bido For Assignment

The Marlins announced today that they’ve designated right-hander Osvaldo Bido for assignment. His spot on the 40-man roster will go to right-hander Bradley Blalock, whose previously reported acquisition from the Rockies is now official.

Miami only claimed Bido off waivers from the Rays four days ago. They’re already the 30-year-old righty’s fourth organization of the offseason. Bido spent the 2024-25 seasons with the A’s and finished the season on their roster. He’s since bounced to the Braves, Rays and Marlins. Today’s DFA could mean he lands with a fifth different club in what would be a span of under two months.

Bido spent seven seasons in the Pirates system before making his MLB debut as a 27-year-old in 2023. He’s spent the past two seasons with the A’s. Listed at a wiry 6’3″ and 175 pounds, he’s pitched 193 2/3 innings in the majors and pitched to a 5.07 earned run average. It’s been a roller-coaster run, with poor numbers in ’23, strong output in ’24 and more struggles in ’25. Overall, metrics like SIERA (4.60) and FIP (4.67) view him a bit more favorably, but Bido has typically pitched like a swingman or sixth starter.

Bido averages 94.7 mph on  his four-seamer and sinker alike. He’s only a bit worse than average in terms of strikeout rate (20.9%) and walk rate (9.6%), but home runs were a major issue in 2025. Bido is an extreme fly-ball pitcher, and a 2024 season spent pitching home games in the cavernous Oakland Coliseum during the Athletics’ final season there treated him well; conversely, a move to West Sacramento’s Sutter Health Park, which played like an absolute launching pad, did Bido no favors. He served up 13 big flies in only 44 1/3 home innings this past season, compared to just six on the road (35 1/3 innings).

The Marlins will presumably hope to pass Bido through outright waivers and retain him as non-roster depth. In that scenario, he’d be invited to big league camp to compete for a job on the Opening Day staff and head to Triple-A if he fails to make the club. But Bido has now failed to make it through waivers three different times this winter, never once making it past the tenth team in terms of waiver priority. Even none of the clubs that has already claimed him earlier in the winter has interest in doing so again, it’s still possible that another club (or multiple clubs) in the remaining two-thirds of the league will place a claim this time around.