Sean Couturier is a key to the Flyers' penalty kill.
The Flyers led the league in penalty minutes this season with 1,180.
Philadelphia also had a strong penalty-killing unit, which is why the team was able to qualify for the playoffs despite spending so much time in the sin bin.
The Flyers finished seventh in the NHL on the penalty kill with an 84.8 percent success rate.
The Rangers' power play was 15th in the league with an 18.2 percent conversion rate, but there is enough talent on the ice to make the Rangers dangerous with the man advantage.
Players like Rick Nash, Brad Richards and Martin St. Louis are the biggest names on the ice, but the Rangers like to spread the wealth around. Five different Rangers scored at least five power-play goals for the team this season.
That doesn't include St. Louis, who was acquired at the trade deadline and scored only one goal in 19 games with New York.
Derick Brassard and Benoit Pouliot tied for the team league with seven power-play goals each while Chris Kreider had six.
The Flyers need to stay out of the penalty box as much as possible and not give the Rangers too many chances with the extra attacker.
When it is short-handed, the dynamic duo of Sean Couturier and Matt Read is among the top penalty-killing tandems in the league. Philadelphia also needs goalies Steve Mason and Ray Emery to come up big while the team is short-handed.
The Flyers need to continue to do a good job while short-handed in order to win this series.