ARLINGTON, Texas — New York Yankees starter Michael Pineda will miss the entire season without pitching in a game because of a tear in the labrum of his right shoulder.

ARLINGTON, Texas — New York Yankees starter Michael Pineda will miss the entire season without pitching in a game because of a tear in the labrum of his right shoulder.

The Yankees said the right-hander will have arthroscopic surgery Tuesday in New York and be out for about a year.

"It's a loss," manager Joe Girardi said Wednesday. "He was a guy that we were counting on this year. We traded for him, and unfortunately he's hurt."

New York acquired Pineda from Seattle in January, giving up top catching prospect Jesus Montero to get the 23-year-old All-Star pitcher.

Pineda felt weakness in his shoulder during an extended spring training game Saturday, which came three weeks after he had problems in a spring training start. The tear was discovered in a medical exam after that.

When Pineda experienced discomfort in the back of the shoulder during spring training March 30, the initial diagnosis was tendon inflammation in his right shoulder.

Pineda was 9-10 with a 3.74 ERA in 171 innings last year as a rookie for the light-hitting Mariners. He's now going to miss an entire season, and possibly more.