The only pitchers announced for Friday are the Royals' James Shields and the Tigers' Justin Verlander, but which game they will pitch has not been specified.
It's speculated that the Tigers will call up left-hander Jose Alvarez from Triple-A Toledo for a Friday start. He's made four starts this year for the Tigers, going 1-2 with a 5.03 ERA. For the Mud Hens, he's 8-6 with a 2.79 ERA in 20 starts.
Dick Kaegel is a reporter for MLB.com. Kathleen Gier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.