CHICAGO — Duncan Keith had three assists and saved a goal in the third period, and the Chicago Blackhawks beat the Anaheim Ducks 5-2 on Wednesday night to force a Game 7 in the Western Conference finals.

Brandon Saad, Marian Hossa and Patrick Kane scored in the second to help the Blackhawks hand the Ducks their first regulation loss of the playoffs. Andrew Shaw had two goals in the third, and Corey Crawford finished with 30 saves.

The Blackhawks improved to 31-0 when leading after two periods.