Nathan played under Coach Chris Vitous at Mt. Carmel High School. He was a three time letter, three time starter for his team. He was also voted captain two years. Nathan was voted First Team All Palomar League, San Diego County All Star Game selection. He was the 3 point contest champion, Team MVP, Holiday Hoops at the Mount All-Tournament Team, and North County Classic All-Tournament Team.
Nathan was born in San Diego, California to Steve and Tracy Middleton. He has one older brother, Jorge Leon. Nathan enjoys laser tag, soccer, traveling, and R & B Music.