Actress Ashley Judd cheers on her alma mater Kentucky

But second seeds Wake Forest and Florida were shock losers as March Madness continued.

Elsewhere, 12th-ranked Butler - the lowest seed left - provided arguably the biggest upset in beating number four Louisville 79-71 in the East Region.

Kentucky, the Midwest Region's top seed, had little trouble in a 74-54 win over ninth-seeded Utah 74-54, while Texas, number one in the South Region, beat ninth-ranked Purdue 77-67 to move to the last 16.

MARCH MADNESS Teams: 64 Defending champ: Maryland Top seeds: Kentucky, Arizona, Texas and Oklahoma When: 20 March-7 April Where: Regional finals - New York, Texas, Minnesota and California. Final - Louisiana What is March Madness?

But in another surprise result, Auburn stunned Wake Forest 68-62 to move into the third round in the East Regional, while number seven Michigan State defeated Florida 68-46 in the South Region.

Meanwhile, defending national champions Maryland also progressed with a 77-64 win over Xavier in the South Region.

In other second-round play, Pittsburgh trounced Indiana 74-52 in Midwest Region, while in the East Region, third seed Syracuse fought back to triumph 68-56 against Oklahoma State.