Harper was removed from Wednesday's game against the Blue Jays due to a left elbow contusion, Alex Coffey of The Philadelphia Inquirer reports.
The 31-year-old stayed in the game after being hit by a pitch in the left elbow during the first inning, though he was replaced by a pinch hitter for his second plate appearance. Harper is being further evaluated, which could include medical imaging. He should be considered day-to-day until more information is available.