Brandon Morrow left Monday night's loss to the Nationals after just nine pitches because of a strained muscle in his left side. After giving up a leadoff double to Steve Lombardozzi, the Blue Jays right-hander motioned for the trainer after missing low on a 1-1 pitch to Bryce Harper, the second hitter of the game. "I felt it on the first pitch to Harper," Morrow said. "I felt like a stabbing in my side when I threw it." Morrow continued to feel tightness in his lower rib cage after coming out of the game and will be reevaluated Tuesday.