DeBeikes rushed for 1,313 yards and 11 touchdowns last year and also had 240 receiving yards.
As first reported by Total Blue Sports on May 1, BYU had been recruiting the California athlete, who was named all-Marmonte League first-team, all-Ventura County first-team, and all-CIF first-team.
"Over the past two years, BYU has had their eye on Nathan and are very excited to have a quality individual and player like him to be a part of the University," wrote Dan. "BYU Coach Nick Howell has been the main contact in recruiting Nathan during this time, and yesterday, Coach Kelly Poppinga was at the TOHS football field to see Nathan during Spring practice..."
The Cougar staff had seen enough and Coach Mendenhall extended the offer Friday evening.
"When Nathan started playing tackle football in the fourth grade with the T O Titans, his goal and desire was to work hard, be the best he could on and off the field, and some day play for Brigham Young University," Dan wrote. "Nathan also has a 3.75 G.P.A."
DeBeikes will be part of the 2013 class and is expected to play outside linebacker following a two-year LDS mission.