definetly start him in wrestling as soon as possible. i started in 8th grade and did just fine, placing in my divisional and state tournaments junior and senior year. a lot of kids on my team started when they wee freshman and did well but if he wants to wrestle and likes it make sure he realizes that it is a year long sport and not just during the winter time. the key to success is that after the season ends he needs to weight lift and go to a wrestling camp/school during the summer and fall. what state are you in because i might be able to recommend some good camps for him?