Red Sox make surprising call-up after Tristan Casas' season-ending injury diagnosis

Triston Casas’ 2025 season is likely over before May has ended.

The Red Sox first baseman suffered a ruptured patellar tendon in his left knee while running out a grounder Friday against the Twins. Chief Baseball Officer Craig Breslow told reporters Saturday that Casas will need surgery.

Triston Casas was just taken off the field after seemingly injuring his left knee while running out a grounder in the second inning
pic.twitter.com/s0smIz7Sd4
— WEEI (@WEEI) May 2, 2025

The standard timeline—six months or more—offers a grim outlook with just five months left in the regular season.

Casas, 25, was off to a slow start (.184/.585 OPS) but was still Boston’s best long-term option at first. Now, Romy Gonzalez gets the job in the short term, while Abraham Toro joins the active roster from Triple-A Worcester.

The Red Sox announce the following roster moves. pic.twitter.com/dXbj6F9BpG
— Mac Cerullo (@MacCerullo) May 3, 2025

There’s no firm timetable, but history doesn’t offer optimism. Guardians outfield prospect George Valera suffered a similar injury to Casas last September and has yet to return.

Breslow says the Red Sox don’t expect Triston Casas back this season. He will have surgery. “All options are on the table” regarding 1B, and he didn’t rule out Devers at this time. Anthony or Mayer moving there is very unlikely.
— Chris Cotillo (@ChrisCotillo) May 3, 2025

For Casas, this marks a second significant injury in under a year. He missed nearly four months last season with rib cartilage damage.

Roman Anthony is MLB's new No. 1 prospect after Roki Sasaki's graduation.

The #RedSox outfielder is raking at Triple-A -- and he's only 20 years old!

Updated rankings: https://t.co/Y0NKYv4N3y pic.twitter.com/ezR3lcyHxm
— MLB Pipeline (@MLBPipeline) May 2, 2025

With Casas sidelined, attention shifts to Roman Anthony. The No. 1 prospect in baseball isn’t a first baseman and hasn’t played the position at Triple-A Worcester. But he entered Friday hitting .290/.422/.527 with 22 walks in 26 games, numbers too loud to ignore. The 20-year-old might force Boston’s hand.

For now, manager Alex Cora said Rafael Devers will remain the primary DH, keeping first base open. Casas’ absence could define the Red Sox’s season—not just by who replaces him, but how soon the future arrives.

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