By JAY COHEN=^AP Sports Writer=    

ST. LOUIS (AP) _ Facing elimination in a quite hostile environment, Brad Marchand and Tuukka Rask stepped up for the Boston Bruins once again.   

 The Stanley Cup Final is heading to Game 7 because two of Boston's biggest stars love the biggest moments.   

 Rask made 28 saves, Marchand had a goal and an assist, and the Bruins beat the St. Louis Blues 5-1 on Sunday night to even the bruising, physical final at three games apiece.   

 David Pastrnak had a goal and an assist as Boston forced the 17th Game 7 in Stanley Cup history. The Bruins also were involved in the last one, winning the championship against Vancouver in 2011.   

 The deciding game is Wednesday night in Boston.