Yankees first baseman Mark Teixeira will have season-ending surgery on his right wrist.
The Yankees said Wednesday that the All-Star had an MRI with dye contrast and that team physician Dr. Christopher Ahmad determined the torn tendon sheath had not adequately healed.
Recovery time for the surgery is projected at six months.
Teixeira was hurt while hitting off a tee March 5, when he was with the U.S. team at the World Baseball Classic. He made his season debut May 31, then came out of a game June 15 because of inflammation. He went back on the disabled list and did not respond to a cortisone shot.
Toronto outfielder Jose Bautista, limited to four at-bats after July 16 last year because of a similar injury, had surgery last Sept. 4 and was ready for spring training.
A two-time All-Star, Teixeira was batting just .151 with three homers and 12 RBIs in 53 at-bats. He is among five regulars who have missed a substantial part of the Yankees season.
Derek Jeter, who turned 39 Wednesday, hasn't played with the team since breaking his left ankle last Oct. 13 in the AL championship series opener. He reinjured the ankle in April during rehabilitation.
Third baseman Alex Rodriguez had left hip surgery on Jan. 16 and the Yankees say they expect both A-Rod and Jeter to return sometime after the All-Star break.
Outfielder Curtis Granderson missed the first 38 games this season with a broken right forearm, an injury sustained when hit by pitch from Toronto's J.A. Happ in his first at-bat at spring training on Feb. 25. Granderson returned May 14 and was in his eighth game back when he broke the knuckle on his left pinkie when hit by a pitch from Tampa Bay's Cesar Ramos on May 24.
Catcher Francisco Cervelli broke his right hand April 26 when hit by a foul tip off the bat of Toronto's Rajai Davis.