The last time Calipari faced Pitino in the NCAA Tournament was in 2014 when Kentucky defeated Louisville 74-69 in the Sweet 16. Two years before that, Calipari and Kentucky eliminated Louisville 69-61 in the Final Four en route to Calipari winning his last national championship as a coach.

Arkansas coach John Calipari believes the emergence of Trevon Brazile and Billy Richmond III has been key for his team. Kansas coach Bill Self acknowledges the challenge of facing Calipari, stating that both coaches will be trying to "beat each other's brains in.

Johnell Davis added 18 points, including some crucial late free throws, to help Calipari to his first tournament victory as Razorbacks coach.

Madness is finally here, which means college basketball fans will get a chance to watch some of the most thrilling hoops for the next few weeks.

Fewer than a million perfect brackets remained on ESPN and just over a million were left on the NCAA’s platform midway through the first day of the NCAA Tournament.