Left winger Taylor Leier, a fourth-round draft pick in 2012, signed an entry-level contract early in the day, then scored the only goal as the Flyers edged the Washington Capitals, 1-0, in the annual rookie game between the teams Monday in Arlington, Va.
Anthony Stolarz and Carsen Chubak combined to register the shutout.
Leier, 19, is getting ready for his third season with Portland in the Western Hockey League. He had 62 points, including 27 goals, in 64 games last season.
Leier scored in the second period as the Flyers ended rookie camp with a victory.
Flyers defenseman Mark Alt was hit into the boards and left the game with what was diagnosed as a concussion. He will be reevaluated Tuesday, general manager Paul Holmgren said.