"I committed to Arizona," Diaz said. "I committed to coach (Bill) Bedenbaugh and coach (Mike) Stoops. They were both excited because they want a bunch of big boys like me to come in and play right away."
The 6-5, 325 pounder is a mid-year transfer and will be available for spring drills after enrolling in January.
WildcatInsider will have more from Diaz and the other visitors who were in town for the game.