Gallen (1-5) allowed seven runs on six hits and three walks while striking out five in four innings to take the loss against the Cubs on Friday.
Gallen allowed just one run in 5.2 innings during his return to the mound Saturday, but he fared considerably worse at Wrigley Field on Friday as he gave up a season-high seven runs. The right-hander hasn't earned a win since April 25, and he's now been charged with losses in five of his last nine outings. Gallen will attempt to bounce back in his next start, and he tentatively lines up to take the mound at home against the Dodgers on Friday.