The number of teams grew, enough to hold the first "world championship" of ice hockey at Montreal's annual Winter Carnival in 1883. The McGill team won the tournament and was awarded the Carnival Cup. The game was divided into thirty-minute halves. The positions were now named: left and right wing, centre, rover, point and cover-point, and goaltender. In 1886, the teams competing at the Winter Carnival organized the Amateur Hockey Association of Canada (AHAC), and played a season comprising "challenges" to the existing champion.