My mixed doubles partner and I signed up to play in a NX3.5d category USTA tournament in February, and I noticed that one of the other teams has a 4.0 player on it. Is that legal? I also noticed he played in 26 tournaments in 2009 including nationals. Should I bring his NRTP rating up to the tournament director, or is there a legal way he can be playing 3.5? The tournament is a USTA tournament, and the category is 3.5, not a combination like 6.0 or 7.0. His partner is a 3.5.