Miami's secondary struggling

Posted by ESPN.com's Heather Dinich

MIAMI -- The Hurricanes are beating themselves with two turnovers and four penalties. Sam Shields is having a particularly rough day. He missed a tackle on third down, got beat for the first touchdown of the game and was called for the facemask penalty that gave the Sooners a first down at the 11-yard line.

With JoJo Nicolas and Randy Phillips out, Miami's secondary needs all of the help it can get. Miami's defense held Oklahoma to a field goal on its last possession, but the mistakes on both sides of the ball are quickly adding up.