Mike Bossy broke a 3-3 tie and started a surge of five straight goals in the third period last night, leading Team Canada to an 8-3 victory over Team USA in Edmonton, Alberta, in a second-round game of the Canada Cup hockey tournament.

In other games, Czechoslovakia defeated Finland, 7-1 and the Soviet Union beat Sweden, 6-3.

After Team USA made a courageous attempt to extend the Lake Placid magic by tying the game on two third-period goals, Bossy took one of Wayne Gretzky's classic backhand passes from behind the net and beat beleaguered U.S. goalie Tony Esposito over the shoulder to the stick side.

The goal by the New York Islander right winger was followed by four consecutive Team Canada scores over the next 5:45.

On a protested goal, Bossy's Islander linemate, Bryan Trottier, dug the puck out of Tony Esposito's glove and drove home a goal at 11:46.

Team Canada, a roster composed of the NHL's elite players, then turned to Gretzky, who fired in a slick backhander at 13:25 for his second goal of the game. Trottier added his second goal as Esposito was caught out of the net at 15:15 and Gilbert Perreault scored as the U.S. goaltender struggled to regain his stick at 16:40.

The Americans trailed, 3-1, after two periods, but tied the game on two soft goals within a 49-second span in the third period.

Dean Talafous sailed a shot between Mike Liut's legs at 4:04 on a power play, and Olympic hero Mark Johnson deflected a 12-footer from the slot to tie the game.