Brayden Schenn scored the tiebreaking goal midway through the third period and Jordan Binnington made 25 saves as the Blues won their eighth straight with a 3-1 victory Tuesday night at Madison Square Garden.

Jaden Schwartz and defenseman Colton Parayko each had a goal and an assist for St. Louis.

Schenn scored for the fifth consecutive game when his wraparound banked off the skate of goalie Alexandar Georgiev at 9:56. Schwartz and Parayko got assists on Schenn’s 25th of the season.

Schwartz sealed it with an empty-net goal, his 21st, at 19:54 as the Rangers lost their third straight.

Binnington won his sixth in a row for the defending champion Blues (40-17-10), who have the best record in the Western Conference and previously had winning streaks of seven and eight games this season.

Mika Zibanejad opened the scoring for the Rangers with a power-play goal at 12:26 of the first period, whipping the puck past Binnington for his 33rd goal while Blues defenseman Robert Bortuzzo was off for tripping.

Zibanejad has goals in eight of the Rangers’ last nine games and 12 of the past 15 to take over the team lead from Artemi Panarin, who has 32 goals and 90 points. The 26-year-old Zibanejad has played in just 53 games this season and has 29 points (15 goals, 14 assists) in his last 19.

The Blues tied it on an unassisted goal at 2:35 of the second by Parayko, who beat Georgiev for his ninth of the season. Georgiev started for the fourth time in five games after veteran Henrik Lundqvist allowed five goals in Sunday’s 5-3 loss to Philadelphia, his first start since Feb. 3. Georgiev made 19 saves in his 30th start of the season.

The Rangers were coming off back-to-back losses to the Flyers after winning five games in a row and nine of 10 to surge into the Eastern Conference playoff race. They are four points behind the Columbus Blue Jackets and New York Islanders, who currently hold the two wild-card spots in the Eastern Conference.

The Rangers have a tough road ahead with Washington visiting on Thursday, then New Jersey on Saturday followed by a trip to Dallas, Colorado and Arizona.

The Blues improved to 7-1-4 against Metropolitan Division opponents and 13-6-4 overall against Eastern Conference teams this season. They have outscored opponents 28-13 during their winning streak.

Blues are at the New Jersey Devils on Friday night.