The two teams could be headed for a playoff rematch. Last spring, the Flyers become the third NHL team in history to overcome a 3-0 series deficit when they beat the Bruins to advance to the conference finals.
"It's going to be very interesting," Marchand said. "Every game determines who we're going to play. It's going to be exciting watching every game because it could determine the outcome of where we're at in the playoffs."
"We were patient and disciplined," said Tim Thomas, who made 27 saves for the Bruins. "They took the penalty at the end and we capitalized."
Versteeg opened the scoring early in the first with his 20th goal. His one-timer from the side of the net off a pass from Richards beat Thomas to the stickside.
But the Flyers, coming off a 4-1 win at the New York Islanders on Saturday night, looked sluggish the rest of the way.
"First period, we had some passions, some energy," defenseman Andrej Meszaros said. "Then it disappeared for some reason. They did everything better than us."
The Bruins tied it on Horton's 23rd goal in the second. Just 4 seconds into a power play, Horton put in a rebound off a slap shot from the point by Tomas Kaberle.
Thomas went down to his knees to block a point-blank shot by Jeff Carter early in the third to keep it tied.
The Flyers went 0-1-2 against the Bruins, Capitals and Penguins in the past week.
"It's just little things we need to correct," Richards said. "We need to be more consistent."
Boston is four points out of second place in the East.
"We're focused on where we are and not where we're going to be," Recchi said. "We're pretty confident we're not going to slip past third. We just want to be playing our best hockey full speed ahead."
The Bruins are 7-0-1 in Philadelphia since March 10, 2007. ... The Flyers are 13-6-5 without D Chris Pronger this season. He's sidelined by a hand injury. ... The Bruins are 3-0-1 against the Flyers this season. They're one of only two teams with a winning overall record (90-56-27) against the Flyers. Montreal is the other. ... Thomas is 10-2-2 against Philadelphia.
Copyright by STATS LLC and The Associated Press
Arena: Wells Fargo Center Location: Philadelphia, Pennsylvania
Referees: Paul Devorski, Tom Kowal Linesmen: Brian Mach, Michel Cormier
Attendance: 19,927 (102.2% full)
Team Stat Comparison
Power Play Goals
Power Play Opportunities
Shots on Goal
Kris Versteeg (20)
Assists: Mike Richards, James van Riemsdyk
Nathan Horton (23)
(Power Play) Assists: Tomas Kaberle, David Krejci
Brad Marchand (20)
(Power Play) Assists: Dennis Seidenberg, Mark Recchi