Red Sox starting pitcher Lucas Giolito will undergo surgery on his right elbow on Tuesday, Alex Cora confirmed to reporters following Monday’s game.

The right-hander, Boston’s lone starting pitching spend this offseason, visited Dr. Jeffrey Dugas at Andrews Medical in Birmingham, AL on Monday after being diagnosed with a partial tear of his UCL and flexor strain.

Dugas and his team won’t determine a specific course of action until they open up the arm and evaluate the extent of the ligament damage. However, the various surgical options – internal brace, Tommy John – all guarantee that Giolito will miss several months, if not the entire upcoming season.

The Sox signed Giolito to a two-year, $38.5 million contract in early January, and expected him to be at or near the top of the rotation. Instead, the 29-year-old, who’d been so durable throughout his eight-year career, may not be in this year’s rotation at all.

This story will be updated.