Louisville has been named the top seed in the men's NCAA basketball tournament, joined by fellow Number 1 seeds Kansas, Indiana and Gonzaga in the 68-team March Madness bracket released on Sunday (March 17th). Last year's champion, Kentucky, didn't make it into the tournament at all. Play begins Tuesday with two games in Dayton, Ohio.

FUN FACT:

  • In order to guarantee picking the winner of all 67 March Madness games, you'd have to fill out more than 9 quintillion brackets -- which is a "9" followed by 18 zeros. If you used one sheet of paper for each bracket, all that paper wouldn't fit inside the entire universe. (Associated Press)