The injury occurred in Florida while Santana was pitching in extended
An MRI exam revealed a torn tendon.
"The tendon is severed, and it will in effect end his season," said Dan Duquette, the Orioles' vice president of baseball operations. "I know the rehab is significant for these tendon injuries. We'll have to get with him and speak to him. But he won't be able to pitch for the Orioles this season."
The 35-year-old Santana has not pitched in the majors since 2012 with the
Santana's return appeared on course when the Orioles purchased his contract from Triple-A Norfolk on Monday and placed him on the major league disabled list.
"He was pitching well," Duquette said. "The last time out he had his velocity and he was able to back-door his slider. I think he had eight strikeouts and no walks, so he was right on schedule. After (Friday), he was going to come up and join the major league team, and we were going to continue the rehab in (Double-A) Bowie."
Santana broke into the majors with Minnesota in 2000. He won both his Cy Young Awards with the
He was traded to New York before the 2008 season and signed a $137.5 million, six-year contract. But injuries limited him to less than four full seasons on the mound with the Mets, and his record got progressively worse — 16-7, 13-9, 11-9, 6-9.
San Francisco activated right-hander Matt Cain from the 15-day disabled list to start Friday night against the
Cleveland activated third baseman