It’s become a pattern now — the Colorado Avalanche look like the better team for the better part of the first 40 minutes and then the final period is a problem.

The Avalanche entered the third at UBS Arena tied with the New York Islanders. All they needed to do was win a period and return home feeling good after an emotional road trip.

The 5-10, 175-pound Perunovich logged 18:52 and was a plus-2 with two shots, earning enough of Roy’s trust to play key shifts in the third period. Tony DeAngelo, signed out of the KHL on Friday, played 22:11 with two blocked shots as he also earned his first point as an Islander with an assist in his second game.

Simon Holmstrom scored twice and added an assist, and Ilya Sorokin made 30 saves to lead the New York Islanders to a 5-2 win over the Colorado Avalanche on Tuesday night.