Martin Perez probably didn't have the Major League debut he was expecting, going 2/3 of an inning, allowing an earned run and giving up two hits Wednesday night. The 21-year-old, who entered the season as the Rangers' top pitching prospect, opened an eighth inning that would see the Detroit Tigers score four runs and cut their deficit to 11-9. To make matters worse, shortly before exiting, Perez was covering first when he was tackled by Tigers 275-pound first baseman Prince Fielder, who was attempting to beat out a throw. It appeared as if Fielder was trying to soften his fall, not deliver a serious blow.