The Astros called up top prospect Hunter Pence following Friday night's game. He will assume to role of center field while Chris Burke will move back to the utility role, and moving Stephen Randolph back to the minors. Pence is batting .341 with 3 HR and 19 RBI in 22 games in Triple-A. Last season, he batted .283 with 28 HR and 95 RBI in Double-A. Burke has struggled so far this season, batting .219 with 0 HR and 3 RBI. But he has collect 5 SB.