Red Sox starter Wade Miley (1-4) was knocked around for four runs on eight hits in six innings Friday to suffer the loss against the Blue Jays.
Miley notched a season-high eight strike outs in the loss, his third straight.
"It's always difficult when you go through a stretch like this," Miley said of Boston's recent slump. "It's on us to get out of it."
Miley returns to the mound for his next scheduled start Wednesday in Oakland.