There were 28 nations that marched in the opening ceremonies on 30 January 1948. Bibi Torriani played for the Switzerland men's national ice hockey team, and became the first ice hockey player to recite the Olympic Oath on behalf of all athletes. Nearly 670 athletes competed in 22 events in four sports. The 1948 Games also featured two demonstration sports: military patrol, which later became the biathlon, and winter pentathlon, which was discontinued after these Games. Notable performances were turned in by figure skaters Dick Button and Barbara Ann Scott and skier Henri Oreiller. Most of the athletic venues were already in existence from the first time St. Moritz hosted the Winter Games in 1928. All of the venues were outdoors, which meant the Games were heavily dependent on favorable weather conditions.