Bonillas was named the Southern Arizona Player of the Year by the Arizona Daily Star in 1993 as a do-it-all player. Bonillas led the region in rushing with 1,203 yards and was named first-team 4A All-Southern Arizona as a junior in 1992 after hauling in 33 catches for 590 yards, despite playing in just seven games. Bonillas took his talents to the UA, starting as a tight end, and finished as an outside linebacker, where he lettered all four years, and played mostly on the special teams unit.

