Here are five things to know about Tennessee head coach Josh Heupel, who was once a quarterback and coach at Oklahoma.

Josh Heupel takes on his alma mater in Oklahoma on Saturday. Did the Heisman Trophy runner-up win a national championship with the Sooners?

For Heupel, who is now in his fourth year as Tennessee’s head coach, life has not always been linear, forcing him to learn constantly and leap when necessary. This is something that Fletcher, who played quarterback at OU from 1996-2000, noticed from the moment Heupel arrived in Norman in 1999.