TEMPE, Ariz. -- What Kliff Kingsbury is doing -- going from college head coach at Texas Tech directly to the NFL as head coach of the Arizona Cardinals -- isn't new.
But there's a reason why Kingsbury is just the 12th head coach to make the jump since 2000 and why he's the first since Bill O'Brien left Penn State in 2014 to take over the Houston Texans.
"There's a huge, gigantic learning curve," said Butch Davis, who jumped from the Miami Hurricanes to the Cleveland Browns in 2001.