William Dufour, F:The 21-year-old made his NHL debut Jan. 18 in a 4-1 loss to the Boston Bruins. Dufour had 48 points (21 goals, 27 assists) in 69 games for Bridgeport in the American Hockey League last season, his first as a professional. … Matthew Maggio, F:The 20-year-old won the Red Tilson Trophy as most valuable player of the Ontario Hockey League with league-highs of 54 goals and 111 points for Windsor last season. He had two assists in three AHL games after signing a three-year, entry-level contract with the Islanders on May 1. … Samuel Bolduc, D:The 22-year-old made his NHL debut last season with three points (two goals, one assist) in 17 games and played two postseason games in place of an injured Alexander Romanov. Bolduc was named an AHL All-Star and finished with 35 points (10 goals, 25 assists) in 56 games.