Brock Wilken, out since June 18 with a dislocated left kneecap, was activated from the injured list by Double-A Biloxi.
Wilken, 23, was batting .230/.392/.550 with 18 homers in 65 games before getting hurt. In spite of his issues hitting for average, he could be a candidate to see time at third base for the Brewers next season.