Detroit first baseman Sean Casey left the AL championship series opener against Oakland on Tuesday night with an injured left calf, and is expected to miss a couple of days.
The Tigers won 5-1 in Game 1. Game 2 is Wednesday night, and Game 3 is Friday night in Detroit.
Casey was in a walking boot after the game. Shortstop Carlos Guillen shifted over to first base when Casey was hurt running out a grounder, and will likely fill in at the position.
``Hopefully tomorrow it feels a lot better and I'll get treatment and be back in there soon,'' Casey said. ``It's frustrating. I've been down this road before. I'm sure those guys will be fine.''
With two outs in the top of the sixth, Casey hit a grounder to shortstop, took one step and then grabbed his leg in pain. He made it about halfway down the line and was thrown out to end the inning.
Manager Jim Leyland and a trainer came out to tend to Casey, who hobbled to the Tigers' clubhouse after the inning.
Ramon Santiago came in the game at shortstop and Guillen moved to first base in the bottom half of the inning. Guillen made an error in the seventh when he bobbled a slow roller by Jason Kendall, but then started a 3-6-1 double play to end the inning.
Casey, batting third in the Tigers' order, went 1-for-3 with a walk.
