Special teams was the difference in the game. Hoffman's goal was the Senators' first on the power play in 15 games. But the penalty kill, which entered 29th in the League, let them down.
"It's nice to break out of the one slump with the power-play goal, but obviously our penalty killing hasn't been great all year," Hammond said. "To give up three in one game, you're not going to win too many games doing that. So a frustrating game overall."
After a scoreless first period, the Flyers got a power play early in the second. Pressure from Giroux caused the Senators' Jean-Gabriel Pageau to throw the puck right to Voracek at the right point. Simmonds cut to the net and redirected Voracek's pass past Hammond 1:30 into the second.
Couturier, who jumped on the first unit, scored on the power play at 11:14 of the second when he got the rebound of a Schenn shot and lifted it over a fallen Hammond for his 11th of the season to give the Flyers a 2-0 lead.