Phillies interim manager Don Mattingly said that Kilian suffered a right side injury during his relief appearance in Sunday's 7-6 victory over the Blue Jays in 12 innings, Matt Gelb of The Athletic reports. Kilian allowed an unearned run on one hit over an inning of relief en route to earning his fourth win of the season.
Kilian entered the contest with the game tied 5-5 heading into the top of the 12th inning. The automatic runner came around to score when Blue Jays center fielder Brett Bateman led off the frame with an RBI single, but Kilian was then able to induce a double play off the bat of Jesus Sanchez before getting Alejandro Kirk to pop out to end the inning. The Phillies would go on to score two runs in the bottom of the 12th to reward Kilian with a win, but the side injury he suffered on his final pitch of the contest could put the right-hander at risk of landing on the injured list. Mattingly said that Kilian's injury "didn't look good," but the Phillies won't known the full extent of the issue until he undergoes further imaging Monday, per MLB.com.