New York Yankees right-hander Ivan Nova has a partial tear of the ulnar collateral ligament in his right elbow and was placed on the 15-day disabled list Sunday.
Nova left Saturday night's game against Tampa Bay in the fifth inning. An MRI exam after the game revealed the injury.
"It's hard," Nova said. "I really don't know what to say. I'm sad right now."
Nova will be further examined Monday in New York by Yankees team physician Dr. Chris Ahmad. He had no discomfort in the elbow until his 82nd and final pitch Saturday when he felt a pop.
The Yankees also, as expected, reinstated first baseman Mark Teixeira from the 15-day disabled list and he was in the starting lineup for Sunday's game against Tampa Bay.
Teixeira hurt an adductor muscle that runs alongside the hamstring trying to make a play on a foul grounder during an April 4 game against Toronto.
New York recalled right-hander Preston Claiborne from Triple-A Scranton/Wilkes-Barre and right-hander Bryan Mitchell from Double-A Trenton. Infielder Scott Sizemore was optioned to Scranton/Wilkes-Barre, while reliever Matt Daley was designated for assignment.