Trevor Bauer, the third overall pick in 2011, made his major league debut for the Diamondbacks on Thursday night. The right-hander allowed two runs over four innings against the Braves in an outing that was shortened by a groin injury. The most notable moment of his debut came when Bauer poured over a fastball for a strike on his first pitch to Atlanta's Michael Bourn. Arizona catcher Miguel Montero flipped the ball back to Bauer, but before he threw another pitch, the pitcher was instructed by Arizona's bench to toss the ball out of play so it could be saved as a memento. Bauer complied, tossing the ball into Atlanta's dugout.