Perfect 10 (gymnastics) of points was based on a maximum of 10, until 1976 it was considered impossible to achieve a score of greater than 9.95, particularly at the Olympic Games (although Věra Čáslavská achieved perfect 10s in the 1967 European Championships, which were displayed on a manual scoreboard). Prior to the 1976 Olympics in Montreal, Omega, the official timers, asked the International Olympic Committee how many digits it should allow on the electronic scoreboard, and were told that three digits would be sufficient, as a score of 10.00 would not be possible. On 18 July 1976, 14-year-old Romanian gymnast Nadia Comăneci performed
Equestrian at the 1976 Summer Olympics had to keep some horses home due to veterinary regulations. Overall 23 nations competed: Argentina, Australia, Austria, Belgium, Bolivia, Canada, Denmark, France, Federal Republic of Germany (FRG), Great Britain, Guatemala, Ireland, Italy, Japan, Mexico, Netherlands, Puerto Rico, the Soviet Union, Spain, Sweden, Switzerland, Uruguay, and the US, with the Montreal Games being the first for Guatemala and Puerto Rico in equestrian events. The 1976 Olympics was also the first Games with a disqualification due to a positive equine drug test, after San Carlos, ridden by Ronald McMahon of Ireland, received treatment following an injury during transport. Although the treatment was