He played Tier II Junior "A" with the Portage Terriers in 2002-03. He played major junior for the Brandon Wheat Kings from 2002 to 2007, with the exception of the 2004-05 season. He broke his neck in a preseason game that year.
Derlago was not drafted by any NHL team and has played mostly in the ECHL since 2007 with a few stints in the American Hockey League. He played in the 2009 ECHL All-Star Game. In 2009-10 he scored 42 goals and 50 assists with Idaho.