The outcome of the Grand National horse race is declared void for the first (and only) time.

The Grand National is a National Hunt horse race held annually at Aintree Racecourse in Aintree, Merseyside, England, near Liverpool. First run in 1839 as the Grand Liverpool Steeplechase, it is a handicap steeplechase over 4 miles 2+1⁄2 furlongs, with horses jumping 30 fences over two laps. It is…