This is the text of an official News Release from the Boston Red Sox 

BOSTON, MA – The Boston Red Sox today placed right-handed pitcher Michael Wacha on the 15-day Injured List due to left intercostal irritation, retroactive to May 5. To fill Wacha’s spot on the active roster, the club recalled right-handed pitcher Tyler Danish from Triple-A Worcester.

Chief Baseball Officer Chaim Bloom made the announcement.

Wacha, 30, last started on Tuesday against the Los Angeles Angels, allowing just three hits over 5.2 scoreless innings to earn the win. The right-hander is 3-0 with a 1.38 ERA (4 ER/26.0 IP) in five starts this season. Wacha leads the American League (min. 25.0 IP) in opponent batting average (.148) and opponent OPS (.467), ranking second in ERA.

Danish, 27, has posted a 3.86 ERA (2 ER/4.2 IP) in four relief appearances for Boston this season. The right-hander most recently appeared for the club on April 27 at Toronto, tossing a scoreless inning in the Red Sox’ 7-1 win. Danish has not allowed a run in five relief appearances for Worcester this season, striking out eight and walking two in 5.1 innings.