After having Tommy John surgery and missing all of last season, Bronson Arroyo has been diagnosed with a torn right labrum, according to multiple media reports.
Arroyo had been attempting a comeback with the Washington Nationals.
The 39-year-old signed a Minor League deal in January.
"The last start he was masterful," Dusty Baker told reporters. "That's what kind of shocked us a little bit, how he didn't respond. Because he appeared like he was in no pain. But you just don't know. Especially as you get older, you don't know how you're going to respond between starts. That was the last test he had to pass."
Via ESPN