Curtis Knight and Mark Matthews each had two goals and one assist, Chris Corbeil scored twice, and Jeremy Thompson and Jeff Cornwall had a goal and two assists apiece for Edmonton (10-0). Ryan Dicks scored one and helped on another, and Nik Bilic also scored.
John LaFontaine chipped in with three assists for the Rush, who scored seven goals in the second quarter.
Curtis Dickson had a five-point night with four goals and one assist for the Roughnecks (6-5), and Jeff Shattler had a goal and two assists. Dane Dobbie scored one and helped on another while Tor Reinholdt also scored.
Rush goaltender Aaron Bold made 27 saves. Calgary's Mike Poulin stopped 23 shots in the losing effort.