The largest margin of victory in an NFL game was 73 to 0. This happened when the Chicago Bears defeated the Washington Redskins during the 1940 NFL Championship game.
The 1940 National Football League Championship Game, December 8, 1940, Bears 73, Redskins 0.
30 points. the 1990 ncaa championship. UNLV beat Duke
Super Bowl XXIV
The largest international victory was between Australia and American Samoa. Australia 31-0 American Samoa.
UNLV Running Rebels
The largest margin of victory recorded in a horse race was by Secretariat in the Belmont Stakes in 1973, where he won by 31 lengths.
UNC in 2009 with a 20.2 average margin of victory