Let me be clear. Despite my hyper-aggressive thread title, I think it is perfectly fine for 4.5 guys to sign up for 8.0 mixed and play as ruthlessly as they can. My question is whether the rules should be changed to disallow it. How about it, TennisMonkey? If you were running the show, would you change the rules? Granted. It is not a very accurate measure until we clean it up. Better would be to examine each 4.5/3.5 v. 4.0/4.0 matchup and see if there is a pattern. I would bet there would be.