Chafin allowed three runs on two hits and one walk over a third of an inning in Tuesday's 8-7 win over St. Louis.
Chafin was brought in to finish off the Cardinals in a non-save situation, then created a save opportunity for Miguel Castro, who finished the game. The outing was the first blemish for Chafin, who was 3-for-3 in save chances and had not allowed a run in seven innings prior to Tuesday.