ZUG, Switzerland -- Canada will have to settle for an appearance in the bronze-medal game at the world under-18 hockey championship after dropping a 7-2 decision to the United States in semifinal play Saturday at the Bossard Arena.

The Americans opened the third period with a one-goal lead before Auston Matthews and Colin White scored 32 seconds apart to make it a 4-1 game.

Mitchell Stephens cut into the deficit but Jordan Greenway answered for the U.S. before White completed a natural hat trick to put the game out of reach.

Matthews also scored in the second period after teammate Clayton Keller opened the scoring.

Deven Sideroff had the other goal for the Canadians, who suffered their first loss after five straight wins.

Canadian netminder Zach Sawchenko was pulled after giving up the fourth American goal early in the third period. He was replaced by Evan Cormier.

The Americans outshot Canada 38-18.

Finland played host Switzerland in the late semifinal. The medal games are scheduled for Sunday.

Canada has won this tournament on three occasions (2003, 2008 and 2013) and finished third last year.