Pittsburgh Penguins at Philadelphia Flyers 2/23/2019

Philadelphia Flyers' Ivan Provorov (9) tries to slip past Pittsburgh Penguins' Kris Letang (58) during the first period of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. (AP Photo/Matt Slocum)

Philadelphia Eagles cach Doug Pederson takes part in a ceremonial puck drop with Philadelphia Flyers' Claude Giroux, left, and Pittsburgh Penguins' Sidney Crosby before an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Flyers goaltender Brian Elliott watches a puck shot by Pittsburgh Penguins' Justin Schultz go into the goal to score during the second period of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. (AP Photo/Matt Rourke)

Pittsburgh Penguins' Sidney Crosby, left, and Justin Schultz celebrate after Schultz's goal during the second period of an NHL Stadium Series hockey game against the Philadelphia Flyers at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. (AP Photo/Matt Slocum)

Pittsburgh Penguins' Sidney Crosby (87) celebrates with Justin Schultz (4), who scored against the Philadelphia Flyers during the second period of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Flyers' Claude Giroux (28) scores against Pittsburgh Penguins' Matt Murray (30) as Justin Schultz (4) defends during overtime of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Slocum)

Pittsburgh Penguins' Zach Aston-Reese (46) skates off the ice as Philadelphia Flyers players celebrate after an overtime goal by Claude Giroux during the NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Slocum)

Philadelphia Flyers' Claude Giroux, right, celebrates with Travis Sanheim after he scored against the Pittsburgh Penguins during overtime of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Rourke)

Philadelphia Flyers fans celebrate after Claude Giroux scored against the Pittsburgh Penguins during overtime of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Rourke)

Philadelphia Flyers fans celebrate after Claude Giroux scored the game-winning goal against the Pittsburgh Penguins in an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3 in overtime. (AP Photo/Matt Rourke)

Philadelphia Flyers' Claude Giroux acknowledges the crowd as he walks to the locker room after scoring during overtime of an NHL Stadium Series hockey game against the Pittsburgh Penguins at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Slocum)

Philadelphia Flyers' Claude Giroux, center, celebrates with teammates after he scored against the Pittsburgh Penguins during overtime of an NHL Stadium Series hockey game at Lincoln Financial Field, Saturday, Feb. 23, 2019, in Philadelphia. Philadelphia won 4-3. (AP Photo/Matt Rourke)