TAMPA, Fla. -- New York Yankees pitcher Masahiro Tanaka, coming back after arthroscopic surgery to remove a bone spur from his right elbow last October, has thrown off a bullpen mound.

Yankees pitching coach Larry Rothschild said the Japanese right-hander had a throwing session Tuesday in New York.

Yankees pitcher Masahiro Tanaka, shown here in 2014, had elbow surgery in the offseason and threw from a bullpen mound on Tuesday. Kim Klement/USA TODAY Sports

After a pre-spring training workout at Steinbrenner Field, Rothschild said all the reports are good regarding Tanaka's rehabilitation program. The Yankees said the injury dates from when Tanaka pitched in Japan. He signed with New York before the 2014 season.

Tanaka was diagnosed with a partially torn elbow ligament in 2014, when he went 13-5 in 20 starts. He was 12-7 with a 3.51 ERA in 24 starts last year and lost to Houston in the AL wild-card game.

Tanaka was on the disabled list from April 23 to June 3 last season with right wrist tendinitis and a forearm strain, then missed a September start because of a strained right hamstring.