After posting back-to-back wins over Merrimack and Vermont — their first winning streak since early December — No. 19 Boston University thought it might have righted its listing ship as the Terriers completed their weekend series against Vermont Saturday night at Agganis Arena.

Not so fast.

Chris McCarthy had a goal and two assists, and the Catamounts started and finished strong in a 5-2 win over BU (16-15-2, 13-10-2 Hockey East).

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BU’s Matt Nieto, who had a hat trick in Friday’s 3-1 win, added another goal, and Garrett Noonan had a shorthanded tally at 7:29 of the third period to get BU within 3-2, but Kyle Reynolds beat Sean Maguire (37 saves) with 1:38 left to restore the two-goal margin, and McCarthy’s empty-netter sealed the win.

Matt White scored shorthanded at 3:24 of the opening period to get Vermont started and Brett Bruneteau made it 2-0 at 6:35 as the Catamounts (11-16-5, 8-12-5) put 42 shots on net one night after putting up 50 shots.

UNH 4, UMass 0 — John Henrion scored three goals and Casey DeSmith turned aside 25 shots to lead the No. 5 Wildcats (18-8-6, 13-7-5) over the visiting Minutemen (11-18-3, 8-15-2) and back atop the Hockey East standings.

 Steve Mastalerz finished with 29 saves for UMass, which is 1-6-1 in its last eight games and dropped one point behind Maine in the battle for the eighth and final playoff berth.

Maine 4, Northeastern 4 — Colton Saucerman had two goals and an assist for the Huskies (9-19-4, 5-16-4 Hockey East), but the Black Bears (10-17-7, 6-12-7) got goals from four players to earn a tie in Orono, Maine.

 The loss eliminated Northeastern from Hockey East tournament contention for the second straight year and third time in the last four seasons.

Princeton 2, Harvard 1 — Raphael Girard made 45 saves, but Andrew Calof scored at 4:23 of the third period to break a 1-1 tie and lift the Tigers (10-14-5, 8-10-4 ECAC) past the host Crimson (9-17-3, 6-14-2).

Quinnipiac 4, Dartmouth 1 — Jordan Samuels-Thomas scored two goals and the No. 1 Bobcats (24-5-5, 17-2-3 ECAC) rebounded from their loss Friday night to Harvard to dominate the No. 18 Big Green (13-11-5, 9-9-4) in Hanover, N.H.

Yale 2, Cornell 1 — Stu Wilson scored a power-play goal at 2:07 of the third period, boosting the No. 15 Bulldogs (16-10-3, 12-9-1 ECAC) past the Big Red (12-14-3, 8-11-3) in New Haven.

Brown 5, Colgate 1 — Matt Harlow had two goals and an assist as the host Bears (11-12-6, 7-9-6 ECAC) routed the Raiders (14-16-4, 6-13-3).

Women

Hockey East quarterfinals — Jenelle Kohanchuk scored twice and No. 4 Boston University (24-5-3) ousted visiting Connecticut, 5-1. The Terriers will meet Providence in the semifinals . . . Kelly Wallace scored two goals and No. 10 Northeastern (22-10-2) earned a 5-2 win over visiting Vermont and a semifinal matchup against No. 3 Boston College . . . Beth Hanrahan scored at 5:51 of overtime and Providence (15-15-5) rallied past New Hampshire, 5-4, in Durham, N.H.

ECAC quarterfinals — Lyndsey Fry scored twice — the first just 17 seconds in — and Harvard (23-5-3) rolled to a 4-0 win over Dartmouth to sweep the best-of-three series.