52-2
Super Bowl XXIV
The largest margin of victory was 30 pts in a champtionship game. Not sure about just tournament games.
Through 2012, the largest margin of victory in a Super Bowl is 45 points. In Super Bowl XXIV , the San Francisco 49ers defeated the Denver Broncos 55-10. Previously, Super Bowl I had held the record 35-10, until eclipsed by Super Bowl XVIII, 38-9, and then by Super Bowl XX, 46-10.
It was one by a team 1000000000 to 0
30-3
Australia (31) vs Samoa (0) - 2002
UNLV Running Rebels
The largest point margin of victory between Auburn and Alabama occurred on November 17th, 1900. The game ended with a result of 53-5 in favor of Auburn.
The 1940 National Football League Championship Game, December 8, 1940, Bears 73, Redskins 0.
The largest margin of victory in the shot-clock era was 68, when the Cavaliers beat the Heat 148-80 in Cleveland on Dec. 17, 1991
I'm pretty sure UNLV beat Duke by 30pts in the 1990 title game
In 1963, Loyola set the NCAA tournament record for largest margin of victory (69 points) with a 111-42 victory over Tennessee Tech in the first round.