Derick Brassard’s playoff debut at the Garden was more memorable than he could have expected.

The 25-year-old center, who was acquired last month from Columbus as part of the trade for Marian Gaborik, had a sensational performance in the Rangers’ 4-3 win over the Capitals in Game 3, producing one goal and two assists.

According to Elias Sports Bureau, his three points were the most by a Ranger in their home playoff debut since Sergei Zubov (1994).

“It was a really big game for us and we knew the energy of our building was going to help us a lot and that’s what happened,” said Brassard. “We played well for 60 minutes, managed the puck the right way. That’s what we’re going to need to do. We need to find a way to keep the momentum. Every time we lost it, we got it back.”

Brassard scored the team’s first power-play goal of the postseason, after nine failed attempts, only seven seconds into the man-advantage, early in the second period. Brassard’s wrist shot past Caps goalie Braden Holtby was his first career playoff goal, giving the Rangers a 2-1 lead.

With the Garden growing nervous with the score tied at two at the start of the third period, Brassard set up the go-ahead goal, assisting from behind the net to a streaking Arron Asham, as the Rangers took a 3-2 lead less than three minutes into the period.

“We just made plays. It’s a matter of being confident to make plays,” said Brassard. “Every goal we scored tonight there were no screens or anything. We got to feel loose on the ice, make sure we have some fun, make plays, feel confident. We know we’re going to find a way to score some goals because we have so much talent on the team.”