John Sterling, the longtime radio voice of the New York Yankees, has decided to retire, effective immediately, the club announced Monday.

Sterling, 85, joined the Yankees' broadcast in 1989. He went on to call 5,420 regular-season and 211 postseason Yankees games. Sterling had taken on a reduced role in recent seasons and traveled less often because of health concerns. This season was his 36th in the booth and 20th working alongside Suzyn Waldman.