The Milwaukee Brewers called right-hander Mark Rogers back from his minor-league rehabilitation assignment with Class AA Huntsville on Thursday, yet another setback for the injury-plagued former No. 1 draft pick.

Rogers began the season on the 15-day DL after suffering both command issues and loss of velocity in spring training. His condition was described at the time as shoulder instability.

After being deemed ready to pitch, the 27-year-old Rogers was assigned to Huntsville. He struggled there in five outings, the last of which lasted only nine pitches Tuesday night. After allowing a home run and walk, Rogers complained of tingling in his arm and was removed from the game.

In five outings with Huntsville, Rogers posted an 11.12 ERA, with eight hits, seven runs and eight walks allowed in 5 2/3 innings, with only one strikeout.

The Brewers announced that Rogers was returning to Phoenix for further testing. He remains on the DL, but the calendar stopped on his 30-day rehab assignment at the halfway mark.

"We're going to do an MRI on his shoulder and hopefully we'll find out what's going on," said Brewers assistant general manager Gord Ash. "They had a tough time examining him in Huntsville because he had some pain. So we'll do the MRI and see what that tells us."