Sports in North America Canadian Confederation in 1867. As for the United States, it became the center of professional boxing in the early 20th century. The major world sanctioning bodies in boxing are based in North America: the International Boxing Federation (Springfield, New Jersey), the World Boxing Association (Panama City), the World Boxing Council (Mexico City), and the World Boxing Organization (San Juan, Puerto Rico). A few North American countries hold their own Triple Crown of Thoroughbred Racing series. The Triple Crown in the United States consists of the Kentucky Derby, the Preakness Stakes, and the Belmont Stakes. The Canadian Triple Crown has the
Leading sire in North America Leading sire in North America The list below shows the leading sire of Thoroughbred racehorses in North America for each year since 1830. This is determined by the amount of prize money won by the sire's progeny during the year. It is restricted to stallions which are based in North America, but currently includes earnings from overseas races in Great Britain, Ireland, France, Italy, Germany and the United Arab Emirates as well as domestic earnings. Prior to 2015, the Leading Sire Lists published by The Blood-Horse excluded earnings from Hong Kong and Japan due to the disparity in purses. Starting