 Hamels was called up to the Philadelphia Phillies in May 2006 . In his Major League Baseball debut on May 12 , he pitched five scoreless innings , allowing one hit , striking out seven batters , walked five , while earning a no @-@ decision against the Cincinnati Reds . In his second career start , Hamels was dominant until the seventh inning , during which he was pulled after he allowed several baserunners , but again received a no @-@ decision . A shoulder injury <unk> Hamels from the lineup of what would have originally been his third major league start . He was put on the 15 @-@ day disabled list and returned on June 6 to defeat the Arizona <unk> 10 – 1 for his first Major League victory . On August 14 , 2006 , Hamels had his best start of his rookie season , shutting out the New York Mets over eight innings and striking out nine in the Phillies ' 13 – 0 victory . He finished his rookie season with a 9 – 8 record , a 4 @.@ 08 earned run average ( ERA ) , and 145 strikeouts ( third among NL <unk> ) in 132 1 ⁄ 3 innings ( sixth among NL <unk> ) . 
