Duffy was reportedly in line to start Game 1 of the American League Division Series against the Angels, but "a stress reaction in his rib cage, a crack on the inside of the bone" eliminated that possibility. Jason Vargas ended up starting the Royals' 3-2 win in Anaheim.
Duffy was relegated to bullpen duties and threw only 4 2/3 innings in the postseason. The left-hander's 2.53 ERA in the regular season (25 starts) was the lowest among the Royals' starters this season and contributed to him originally being pegged to start the ALDS opener.
Jackson Alexander is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.