Los Angeles Angels right-hander Dan Haren is on the disabled list for the first time in his career with lower-back stiffness.
The Angels made the move Thursday, two days after Haren finally acknowledged his back has been bothering him since spring training.
Los Angeles also recalled right-handed reliever Kevin Jepsen.
Haren is 6-8 with a 4.86 ERA, and the three-time All-Star has struggled through most of his starts in an unusually rocky season. He gave up seven runs in 4 1-3 innings to the Indians on Tuesday night.
Haren has been an uncommonly durable pitcher, leading the majors with 254 starts since his first full major league season in 2005. He has thrown at least 215 innings in each of the past seven seasons, the majors' longest active streak.