St. Louis Cardinals pitcher Luke Gregerson waits on the mound as Minnesota Twins’ Bobby Wilson, right, rounds the bases on a two-run home run during the seventh inning of a baseball game Tuesday, May 15, 2018, in Minneapolis. The Twins won 4-1. (AP Photo/Jim Mone)

MINNEAPOLIS (AP) — The St. Louis Cardinals have placed struggling reliever Luke Gregerson on the 10-day disabled list with a right shoulder impingement.

The Cardinals also recalled right-hander John Brebbia from Triple-A Memphis on Wednesday. Brebbia is 0-1 with a 2.70 ERA in six relief appearances for St. Louis this season, striking out 14 in 10 innings.

Gregerson, who signed an $11 million, two-year contract with St. Louis over the winter, has an 8.64 ERA in 12 appearances this season. The 34-year-old right-hander recorded just one out in Tuesday’s 4-1 loss at Minnesota and was charged with two runs and two hits.

St. Louis has put four pitchers on the disabled list in the last week, with Gregerson joining starters Carlos Martinez and Adam Wainwright and reliever Tyler Lyons.

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