The promotion from Class AAA the 25-year-old Guduan received news of Tuesday was his first. The Astros added him to their 40-man roster in November to protect him from minor league free agency. He has a 5.47 ERA in 26 1/3 innings with Fresno on the season but a 1.69 ERA over 16 innings in May.

Player D.O.B Sport Batted Threw Position