At the time, the Predators were outshooting the Flyers 20-9.
"We had the momentum there for a while, and couldn't get that break to give us that confidence," O'Reilly said. "And that's been kind of all year for us. We're hanging on and a bad thing happens, and we kind of ... you can feel us all tighten."
Philadelphia coach Rick Tocchet credited Vladar for keeping the Flyers in it until that point.
"He was great," Tocchet said. "He was the difference-maker. We were kind of asleep for a couple periods, and he was our smelling salt. He was really good."
Drysdale extended it to 2-0 at 15:41, scoring from the bottom of the left circle. It was the defenseman's first goal of the season.
"Definitely feels nice," he said. "It was ugly, just squeaked in, but sometimes you've got to start with that. Heck of a pass by [Michkov] and it was nice to get one."