Boston’s power play was on fire, going 4-for-4 and needing just 2:06 to score the four goals.
The Bruins opened up a 3-0 lead in the first period on a power-play goal from Patrice Bergeron at 10:47, and even-strength goals Charlie Coyle at 17:40 and Sean Kuraly with 2:50 later.
St. Louis lost an offsides challenge on Kuraly’s goal leading to David Pastrnak’s power-play marker 41 seconds into the middle frame.
After Ivan Barbashev finally stopped the bleeding, Torey Krug’s power-play goal at 12:12 sent Binnington to the bench in favor of Jake Allen. It was the first time Binnington was pulled in his NHL career. He departed with 14 saves on 19 shots.
Colton Parayko pulled one back with a power-play goal 5:24 into the third before Noel Acciari and Marcus Johansson completed the scoring with late goals.
In addition to his goal, Krug added three helpers to become the first Bruin to ever post a four-point game in the finals in franchise history.
Tuukka Rask finished with 29 stops to pick up his 14th win of the postseason.
Game 3 is Monday night at Enterprise Center.
SBN Recaps: Stanley Cup of Chowder - St. Louis Game Time (pending)