David Arseneault, the architect of the Grinnell System, added to Westhead's system by substituting players in three waves of five players, similar to an ice hockey shift.
David Arseneault, el arquitecto del sistema Grinnell, sumó al sistema de Westhead la sustitución de jugadores en tres olas de cinco jugadores, similar a un turno de hockey sobre hielo. Webber, Elizabeth; Feinsilber (1999).WikiMatrix WikiMatrix