Forty-nine years after Boston's Bobby Orr flew through the air following his Stanley Cup-clinching goal against St. Louis, Bruins defensemen Connor Clifton and Charlie McAvoy played a huge role in a Game 1 win over the Blues. Forty-nine years after Boston's Bobby Orr flew through the air following his Stanley Cup-clinching goal against St. Louis, Bruins defensemen Connor Clifton and Charlie McAvoy played a huge role in a Game 1 win over the Blues.     Both scored in the second period to tie the game at 2-2 and the Bruins went on to take the opener 4-2.     Sean Kuraly scored  the game-winner in the third period and Brad Marchand added an empty netter to clinch it.