Urias will undergo left anterior capsule surgery on his pitching shoulder on Tuesday.
Anterior capsule surgery is one of the most difficult arm surgeries for a pitcher to recover from. Pitchers who have required the procedure in the past have required as many as 18 months to fully recover. Even in the best-case scenario, Urias won't be returning to the mound until the summer of 2018, and it's possible he will miss all of next season.