There are two bobsleigh events at the Olympics, two-man and four- man. Women do not compete in this event. The four-man bobsleigh was introduced in the 1924 Olympics; the two-man bob began in 1932. There have been times, like in Squaw Valley in 1960, when the event was not held because the course was just too expensive to build. The sport debuted in Switzerland in the late 1880s. In its early days, the bob was more of a traditional sled, with up to six riders lying on their stomachs and plunging down the hill head first. Metal runners replaced wooden ones in 1932, and gradually, the sport evolved to what it is today -- competitors sitting up in a bobsleigh that looks like a sports car, or a rocket ship and attaining speeds of 90 mph. Bobsleighing is a sport the Americans once excelled at, winning Gold in the 4-man Bob in 1928, 1932 and 1948, and in the 2- man Bob in 1932 and 1936. The U.S. hasn't won a medal in either event since 1956. The greatest bobsleigher in history was Italian Eugenio Monti, who won 11 world championships from 1957 to 1968. Monti may best be remembered, however, for his act of sportsmanship at the 1964 games. The British team was in second place after their first run (it's a 2-run event) when they found that their sled had a broken bolt on the rear axle. They were about to forfeit the competition, when Monti, at the bottom of the run, took a bolt out of his sled's rear axle, sent it up to the British sled, and watched them win the Olympic Gold. For his unselfish act, Monti was awarded the de Coubertin Medal for Sportsmanship, and a permanent place in sports history, far beyond his athletic achievements.