Null of Mission Viejo, Calif., coached Jennifer Parilla, who became the first U.S. trampolinist to compete in the Olympic Games when the sport made its Olympic debut in 2000 and qualified for her second Games in 2004. He also coached Logan Dooley, who was the alternate for the 2008 Olympics and, in 2009, became the first U.S. man to win a World Cup event in individual and synchronized trampoline.
Null has coached at 28 national championships, 13 World Championships, and the 2000 Olympic Games. A coach since 1970, his accomplishments include 2000 Olympic coach; coach of more than 40 national champions (Level 10 and above); coach of seven medalists at World Age Group Competitions; 10-time U.S. trampoline coach at World Championships; Milton Davis Award for senior level coaches; and three-time National Trampoline Coach of the Year (1989, 1997, 2000).
In addition to coaching, Null was an international trampoline judge who worked World Team Trials, national championships, and various international events. He also has held positions on several senior technical committees.
He was a member of the California State University at Fullerton’s gymnastics team from 1970-72, which won the NCAA Division II national title in 1971-72. He earned a Bachelor of Science in physical education and a California teaching certificate from CSUF.