O'Reilly tied it at 11:09 when he got a loose puck out of a scrum in front of the net to make it 2-2. The goal, which was awarded after being challenged for goalie interference, extended O'Reilly's point streak to eight games.
"We're all just whacking at it trying to get a bounce, and lucky for me I put it in," O'Reilly said. "That was just kind of the way we were playing tonight; everyone just giving it what we can trying to win the battle. It was good enough tonight."
St. Louis outshot Florida 19-8 in the third period.
"I thought we had a good game," Parayko said. "It's tough; they had the two power-play goals. I thought we did well 5-on-5 and we just stuck with it the full game. Obviously being down two in the third isn't easy, and just continuing to push and push and push was huge. We did a good job in the third of sticking with it, just not letting that faze us and we continue to get things done."
Borgstrom gave Florida a 1-0 lead at 18:55 of the first period after Aaron Ekblad's wrist shot from the point was blocked in front of the net.
Barkov scored 30 seconds into the third period when he redirected a short pass from behind the net by Mike Hoffman to make it 2-0.