 Marcum ended the season with a 13–8 win–loss record, 3.64 ERA, and 165 strikeouts in 195 innings pitched.On December 6, at the 2010 MLB Winter Meetings, Marcum was traded to the Milwaukee Brewers in exchange for infield prospect Brett Lawrie.On July 4, 2011, Marcum hit his first Major League home run, a grand slam off Daniel Hudson of the Arizona Diamondbacks.