St. Louis Blues goaltender Jordan Binnington (50) reacts after giving up a goal to Boston Bruins left wing Jake DeBrusk, not seen, during the first period of Monday night's game at TD Garden. (AP photo)

BOSTON (AP) — Patrice Bergeron scored a power-play goal with 7:15 remaining and the Boston Bruins beat the slumping St. Louis Blues 3-1 on Monday night.

Trent Frederic and Jake DeBrusk also scored for Boston, and Brad Marchand had two assists. Linus Ullmark finished with 25 saves as the Bruins improved to 7-0-0 at home and won for the eighth time in nine games overall.

Brayden Schenn scored and Jordan Binnington had 34 saves in the Blues’ seventh straight loss — all in regulation.

With the score tied 1-1 deep into the third period, St. Louis captain Ryan O’Reilly was whistled for tripping with 8:28 left to put the Bruins on the power play and they capitalized.

Binnington stopped two shots by Marchand and managed to cover a rebound during an extended scrum in front of the net. However, the Bruins won the faceoff and worked the puck around to Bergeron in the slot for a one-timer that put Boston back on top with his fifth of the season.

Frederic helped seal it with 3:32 left with his third.

The Bruins led 1-0 after DeBrusk scored on a power play with 6:26 left in the first period, taking a backhand feed from Pastrnak in the slot and slipping it between Binnington’s legs for his fifth.

Schenn tied it for St. Louis on a one-timer with 8:23 left in the second off a crossing pass from Jordan Kyrou. It was his third. Former Bruins defenseman Torey Krug also assisted on the goal.

SAAD RETURNS

Blues LW Brandon Saad was back on the ice for the first time since an upper-body injury caused him to miss six straight games.

PRODUCTION

Marchand’s assists gave him seven points (four goals, three assists) in five games since returning early from hip surgery.

UP NEXT

Blues: At Philadelphia on Tuesday night.

Bruins: Host Calgary on Thursday night.