Pavelski tied it 1-1 at 8:08 with a power-play goal.
The Rangers challenged the goal, claiming the puck went out of play before Pavelski scored on a netfront deflection. Video review confirmed the puck never left the playing area. The Rangers were given a delay of game penalty for an unsuccessful challenge.
Pavelski scored on the ensuing power play to give Dallas a 2-1 lead at 8:24.
"We thought it was a hundred percent out and obviously we had an angle that they probably didn't see or there was a discrepancy," Rangers coach David Quinn said. "We thought for sure it was going to get called back, but we were wrong."
Brett Howden tied it 2-2 at 15:41, when he gloved the puck down and batted it in with his stick. It was initially ruled no goal, but the call was overturned after video review showed Howden propelled the puck into the net with his stick, not his glove.