Originally Posted by LuckyR
I get your last paragraph's example, but you know what? The most visible tennis ranking systems in the world (the ATP and WTA) don't use any opponent ranking information in their calculation of ranking. A trip to the quarters in a 500 level is the same whether you beat the World #1 6-0, 6-0 or if you were LL with three walkovers. You'd think from these boards that the Pro ratings would be all over the place, but except for players coming off of injury, it seems to work just fine.
The problem is that pros play only tournaments and USTA is mostly about leagues and teams so the pro ranking system would not work.