Just back from our Sectional. We found a self-rated 3.5 player who played not only 4.0 but also 4.5 usta league/tournaments this season. And his 3.5 winning record is 94%. 4.0 & 4.5 winning record is 64%. All these are records are from tennislink. My captain filed a grievance against him. And USTA denied the grievance. They said that "He has improved the game in the 2010 season and is competitive at the 4.0 level now. Note that USTA Tennis allows for a player to improve without fear of disqualification." Funny, he self rated in feb 2010. And start playing 4.0 tour in May. That means it took him at most 3 months to improve from 3.5 to 4.0 based upon usta records. Looks like usta doesn't care about Self-rated sandbager at all.