William Masterton was a Canadian American professional ice hockey centre who played in the National Hockey League (NHL) for the Minnesota North Stars in 1967–68. He is the only player in NHL history to die as a direct result of injuries suffered during a game, the result of massive head injuries suffered following a hit during a January 13, 1968 contest against the Oakland Seals.

The Minnesota North Stars were a professional ice hockey team in the National Hockey League (NHL) for 26 seasons, from 1967 to 1993. The North Stars played their home games at the Met Center in Bloomington, Minnesota, and the team's colors for most of its history were green, yellow, gold and white. The North Stars played 2,062 regular season games and made the NHL playoffs 17 times, including two Stanley Cup Finals appearances, but were unable to win the Stanley Cup. After the 1992–93 season, the franchise moved to Dallas, and the team was renamed the Dallas Stars.