Dubois pulled the Capitals within 2-1 at 19:27 with a power-play goal, getting the feed from Rasmus Sandin and carrying the puck across the offensive zone for the snap shot from the right dot.
Peterka increased the lead to 3-1 at 18:24 of the second period on the power play. Peterka’s snap shot from the slot hit the post and deflected in off Thompson's glove as the goalie tried to reach behind him for the puck.
Leonard pulled the Capitals within 3-2 at 6:31 of the third period. The forward ended a 14-game goal drought when he sent a snap shot over Vejmelka’s left shoulder from the right circle during a power play.
“It’s nice to see it go in again,” Leonard said. “But, obviously, you want to get the win, especially at this time of year and the spot we’re in.”
With Thompson pulled for the extra skater, Vejmelka slid across the crease to save a Dubois snap shot with 1:29 remaining.
“I think they had a push at the end, which is expected, but I liked the pressure we applied on them on their 6-on-5,” Mammoth coach Andre Tourigny said. “So they had to execute really quickly and they did a good job, but they could not get high quality (shots), so I’m happy about that.”
NOTES: Sergachev became the fifth defenseman to score 10 or more goals in each of a franchise’s first two seasons, and the first since Shawn Chambers did it with the Tampa Bay Lightning (1992-93 and 1993-94). … Keller has 14 points (three goals, 11 assists) in 13 career games against Washington. … Guenther scored his 28th goal of the season, a new career-high. … Capitals forward Aliaksei Protas (personal) was a late scratch. … Dubois has registered six points (four goals, two assists) in five games since returning to the lineup on Feb. 5 after missing 47 consecutive games because of injury.