The numbers backed the Blues. Boston (8-7-2) was 0-7-0 when trailing after two; the Blues were 5-0-0 when leading after two. The Bruins had been outscored 16-5 in the third period this season. But Boston went out and collected 60 percent of its season total prior to Tuesday in 20 minutes against the Blues.

The Bruins went into the third period down 2-0 but they got one back at 4:53 from Morgan Geekie, back in the lineup after three straight healthy scratches. David Pastrnak stole the puck from Colton Parayko in the neutral and took off with Geekie on an odd-man rush. Geekie took Pastrnak’s pass and beat Jordan Binnington to the blocker side.

David Pastrnak scored with 1:47 to play as the Boston Bruins scored three third-period goals to come back for a 3-2 win over the St. Louis Blues on Tuesday night. Pastrnak’s shot from the left circle trickled through Jordan Binnington’s pads and slid just over the goal line.