Alex Rodriguez looked perfectly healthy on Wednesday night. An MRI by team doctor Stuart Hershon and Dr. William Hamilton on Rodriguez's injured right ankle Wednesday afternoon revealed a sprain and bruise. But it did not seem to bother the slugger, who was a late addition to the lineup before the game. The All-Star third baseman smashed two prodigious homers as the Yankees routed the Mariners, 10-2, in an important contest Wednesday night.