The 29-year-old Fiers also made four relief appearances in mid-June with the Brewers, posting an 0-1 record with a 2.57 ERA.
In 2012 with the Brewers, Fiers was 8-6 with a 2.88 ERA in his first 16 starts before going 1-4 with a 7.09 ERA in his last six starts. He struggled early in '13, going 1-4 with a 7.25 ERA before being sent down. His season ended in mid-June when he sustained a broken right forearm when he was hit by a line drive.
Jamie Ross is an associate reporter for MLB.com. Jim Hoehn is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.