Informally known as March Madness or the Big Dance, the National Collegiate Athletic Association (NCAA) College Basketball championship has become one of the most famous annual spring sporting events in the United States. After two weekends of wild, upset-filled games, the Final Four set.

The University of Florida favors to take the title, having a 30-game winning streak.   But first, the Gators have to get past the Connecticut Huskies in one semifinal.  Wisconsin squares off against Kentucky in the other semifinal game next weekend in Arlington, Texas.  The winners will play for the national championship on Monday night.

The tournament began with 68 teams, but after the first weekend of play there were 16 teams still in it.   When the second weekend ended,  the final four teams stood.  For the first time in eight years, no final teams made the final four last year.

Every year, millions of fans try to predict which teams will win each matchup and eventually who will become the national champion. Billionaire Warren Buffett offered to pay a billion dollars to anyone who filled out a perfect NCAA bracket. The odds of winning were 128 billion to one.  But, because the tournament was filled with so many upsets, 95 percent of the people who entered were eliminated after the first day.   Needless to say, no one won the billion dollar prize. In fact, just on ESPN’s bracket out of 11 million entries, less than five ten thousandths of the entries accurately predicted the teams in the Final Four.