I think that there is a safe way to diet and cutting out sugar and carbs would be the safe way. We had people in our club who are pretty good sized kids and they cut out that stuff and they have maintained a safe weight for over 3 years. I have a 12 yr old who is 5ft 4in and she doesn't even weigh 125lbs. Have you talked to their ped. about this and what do they say. My daughter was close to 100lbs at 7yrs old and I talked to the dr and they had found a medical condition and she lost 20 after it was under control. I don't believe in cutting weight and I think that is great that he is out there getting exercise. Losing 9lbs in 3 days is not safe. I think that they should be able to wrestle state but remember there is always next year. Work hard over the summer and then maybe he will be able to safely lose the weight and then wrestle next year. Good Luck