AL wild-card storylines: An epic showdown between shortstops

The American League playoff stage is set, promising a thrilling start to October baseball. The action begins Tuesday with the the No. 6 seed Detroit Tigers facing the No. 3 Houston Astros, followed by the No. 5 seed Kansas City Royals playing the No. 4 seed Baltimore Orioles. From rising stars to familiar faces in new places, here are five key storylines to watch in the first round of the AL playoffs.