Johan Santana's up-and-down career with the Mets is likely over.
Mets general manager Sandy Alderson told reporters Thursday night that Santana had reinjured his surgically repaired left shoulder and would miss the entire season. He will return to New York for further evaluation, but he is expected to need another major surgery on his throwing shoulder. He was examined by team doctor David Altchek, who performed the original surgery, and Dr. James Andrews. Both concurred the anterior capsule had been torn again.
"If this diagnosis proves to be correct, I think in all likelihood Johan will be lost to the Mets for the season," Alderson told reporters.
Mets beat writers covering the final weekend of spring training in Florida were notified Alderson would be speaking to the press Thursday night, whereupon he broke the news.
Santana was shut down last season after 21 starts, though no official injury was diagnosed. He had missed the entire 2011 season after the initial surgery to repair a torn capsule in his throwing shoulder and the team felt Santana needed to be shut down early after struggling much of the second half of the season.
Santana threw the first no-hitter in Mets history June 1 against the Cardinals, but threw 134 pitches in doing so. He was 3-7 with an 8.27 ERA in his 10 starts after the no-hitter.
"What we do know is at some point symptoms appeared and they worsened instead of improved," Alderson told reporters. "We simply don't know when this occurred."
Santana is in his final season as a Met. He is due $25 million this season, but the team has an option for 2014. At $25.5 million, they will not pick it up and instead pay the $5.5 million buyout. It was widely expected that the Mets would look to trade Santana for prospects should he pitch well enough this season. They took a similar tactic with Carlos Beltran, who they traded for current top prospect Zack Wheeler two years ago.
Santana, a two-time Cy Young winner with Minnesota, was acquired in a trade with the Twins in February 2008. He was 46-34 with a 3.18 ERA and 1.20 WHIP in four seasons for New York.
Follow Metro New York Sports Editor Mark Osborne on Twitter @MetroNYSports.