David Pastrnak scored twice, Brad Marchand added a goal and two assists, and the visiting Boston Bruins held on to defeat the Toronto Maple Leafs 6-4 Wednesday night to even the first-round Eastern Conference playoff series at two games apiece.

Rookie Roope Hintz scored his first two career postseason goals as the host Dallas Stars cruised to a 5-1 victory over the Nashville Predators in Game 4 on Wednesday to even their Western Conference first-round series.

Mikko Rantanen's second goal of the game was the overtime winner as the host Colorado Avalanche erased a two-goal deficit and beat the Calgary Flames 3-2 Wednesday night in Denver to put the Western Conference's No. 1 seed on the brink of elimination in the opening round of the Stanley Cup playoffs.