I don't want to do wrestling any more.?

Hi I am a senior in High School, I quit playing football when I was in 10th grade was a really hard decision to make because my dad was an "Ex"-Football coach (Hes and Athletic Director now). And he yelled and even cussed at me for not wanting but in the end he still let me quit....only because I was still wrestling which at the same time was also a sport that I have grown tired of. Now I want to tell him that I do not want to wrestle any more. My mom said that he would take away my Computer if I didn't wrestle? How that has any thing to do with my life I do not know. I have been doing both Football since Rec. all the way to 10th. And the same goes for Wrestling all the way until now. So what should I tell him? I don't ever quit a sport during a Season but since the Season hasn't started yet now is a good time I think, so i'm not a quitter. So if you can please give me advice on how to handle this.