The one significant signing the Red Sox added to their starting rotation might miss the entire 2024 season.

Lucas Giolito has a partially torn UCL and a flexor strain in his right elbow, according to ESPN, and may not pitch at all this year.

Giolito, whom Boston signed to a two-year, $38.5 million contract, might need surgery to repair the tear, per ESPN.

“We’re obviously concerned,” Red sox manager Alex Cora told reporters Tuesday morning, according to the Boston Globe, when revealing Giolito had elbow discomfort. “Not a good day for us.”

The injury to Giolito will increase speculation about whether the Red Sox will sign a free-agent starter like Jordan Montgomery, whom the team met with recently.

Earlier in spring training, Red Sox star Rafael Devers made pointed comments toward the front office about not adding more pitching.

This is a developing story; check back for updates.