Sweet 16 comes with plenty of great storylines

The first two rounds of the NCAA tournament have produced many exciting moments. There have been upsets like Wisconsin over No. 1 overall seed Villanova. Duke was stunned by South Carolina. Louisville was sent home by Michigan.

There have been great finishes, a handful of controversial calls and excitement galore. That is why the NCAA tournament is the best three weeks in sports.

How many people would have thought the ACC would have just one team (North Carolina) in the Sweet 16? The conference was the best one in the sport this season. Louisville, Virginia, Notre Dame, Florida State and Duke all lost in the second round.

The Big Ten (Michigan, Purdue and Wisconsin), SEC (Kentucky, Florida and South Carolina), Big 12 (Kansas, West Virginia and Baylor) and the Pac-12 (Oregon, Arizona and UCLA) each have three teams in the Sweet 16.

Xavier, even without injured Edmond Sumner, has impressed with wins over Maryland and Florida State. Trevon Bluiett has been solid for Chris Mack's team.

Gonzaga has advanced to the Sweet 16. Two more wins and the Zags will make their first Final Four.

South Carolina is in its first Sweet 16. Frank Martin has done a great job. The Gamecocks came into the NCAA tournament with a 2-5 record in its past seven games. South Carolina was held to 53 points in a loss to Alabama in the SEC tournament. The Gamecocks are averaging more than 90 PPG in the NCAA tournament. Free throw shooting and second half field goal shooting were keys in the first two wins.

North Carolina struggled to get past Arkansas. Kansas was impressive in the second half of its win over Michigan State.

Now we will see some more special moments. Kentucky-UCLA has the potential to be a classic. Their first meeting was an offensive showcase, won by the Bruins.

The Sweet 16 is set. Teams are two wins away from a trip to the Final Four in Arizona!