American football has 11 players per team with unlimited substitutions. Rugby features 15 players divided into forwards and backs. American football uses 120x53.5-yard rectangular field with 100-yard goal lines. Rugby field is 120 meters long with 10-meter goal lines
Golf handicapping dates back to late 17th century Scotland. First standard system introduced by Ladies Golf Union in 1890s. USGA developed first national system in 1911 based on British three-score average
Ancient Olympics featured only jumping event, later added to men's and women's programs. Ancient athletes carried halteres (1-4.5 kg) and performed jumps in skamma pits. Chionis set Olympic record of 7.05 m in 656 BC
Freestyle wrestling originated from catch-as-catch-can wrestling in Britain and US. Style gained popularity in 19th century fairs and festivals. First appeared in 1904 Olympics as American sport. UWW established rules in 1921, later adopted by AAU
First recorded in Scotland in 1511, with oldest curling stone found in Dunblane. First official rules developed by Royal Caledonian Curling Club in 1838. Sport spread from Scotland to Canada, then to Europe and other countries. Became Olympic medal sport in 1998, with Canada dominating since then
Dartboard numbered 1-20 in non-sequential order around board. Outer ring scores double, inner ring scores triple. Bullseye worth 25 points for outer, 50 points for double. Players start with 501 or 301 points