NEW YORK -

The New York Mets say Johan Santana has injured his left shoulder again and likely will need surgery and miss the 2013 season.

The two-time Cy Young Award winner missed the 2011 season following shoulder surgery in September 2010, then returned last year and pitched the first no-hitter in the team's history. He hasn't pitched in an exhibition game this year because of arm weakness.

Mets general manager Sandy Alderson said Thursday that an MRI in New York a day earlier showed a "probable" re-tear of Santana's left shoulder capsule.

Alderson said Santana's $25 million salary this year is not covered by insurance. The Mets will also owe him a $6 million buyout after this season.