His career makes more sense in reverse. Ripped from another site:
"He started out as a budding HC with lots of potential at a low profile directional Florida school. He parlayed his offensive prowess into a big time OC position at the best team in the SEC. He then left to take one of the best head coaching positions nationally at USC. Finally, after nearly 4 seasons in LA and with the shadow of the NCAA looming at his doorstep, he took off for old Rocky Top. After just one short season at Tennessee (including the requisite loss to Florida), Kiffin burned every bridge in Knoxville by jumping ship to the NFL as head coach of the Oakland Raiders."
"He started out as a budding HC with lots of potential at a low profile directional Florida school. He parlayed his offensive prowess into a big time OC position at the best team in the SEC. He then left to take one of the best head coaching positions nationally at USC. Finally, after nearly 4 seasons in LA and with the shadow of the NCAA looming at his doorstep, he took off for old Rocky Top. After just one short season at Tennessee (including the requisite loss to Florida), Kiffin burned every bridge in Knoxville by jumping ship to the NFL as head coach of the Oakland Raiders."