Coming into this season the Red Sox expected Triston Casas to anchor the lineup as one of the club’s most prolific power threats.

That did not work out.

The 25-year-old first baseman struggled out of the gate before suffering a catastrophic knee injury that sidelined him for the rest of the season. Casas has been rehabbing ever since, but his status for the start of 2026 remains uncertain.

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Asked if he expects Casas to be the Red Sox starting first baseman next season, chief baseball officer Craig Breslow declined to make any kind of commitment.

“I don’t think it makes a ton of sense on Oct. 6 to say someone is or isn’t our first baseman. We’ll see how things play out,” Breslow said. “Unfortunately Triston has missed a significant amount of time over the past two years, we’ve also seen what he’s capable of doing when he’s healthy.”

Since making his debut late in the 2022 season Casas has batted .241 with 45 home runs and an .800 OPS in 251 games. He enjoyed a productive rookie year in 2023, hitting 24 homers with an .853 OPS as a 23-year-old, but in each of the past two seasons since he has missed significant time due to injury.

In 2024 Casas missed nearly four months due to a ribcage injury, and this year he went down on May 2 with a ruptured left patellar tendon.

Breslow said his recovery is going well, though he wouldn’t offer a specific timeline.

“He’s doing really well, he’s in here every day rehabbing so watching the progress from the initial surgery to where he is now, he’s moving around really well, load bearing, squatting,” Breslow said. “So we anticipate a full recovery but I’m hesitant to put a timeline on it because with any of these injuries you want to make sure you’re not getting too far out in front.”

Extra innings

Breslow called the departure of assistant general manager Paul Toboni to the Washington Nationals a “significant loss.” Toboni, who was hired as Washington’s head of baseball operations, had been the heavy favorite to take the No. 2 job under Breslow in Boston, and now Breslow said there is no timeline for filling that job as he figures out how best to structure the front office going forward. … When asked if there will be any changes made to the coaching staff, Breslow said they are still talking but added that he feels the existing staff did a good job. … Kennedy said the club has all the necessary approvals to move forward with the Fenway Corners redevelopment project around the ballpark, but that work is currently on hold due to the current economic environment, specifically the heightened interest rates and construction costs.