The USTA FAQ on NTRP appears to say that a player with a mixed exclusive rating who is self rating for adult USTA leagues must use the mixed exclusive as the minimum for their self rate level: Can I use my mixed exclusive rating to play in other divisions? A mixed exclusive (M) player must self-rate in order to join the Adult, Senior and Super Senior divisions. Mixed Doubles exclusive is a minimum NTRP start level only. A mixed exclusive rating is not supported by any NTRPdynamic disqualification calculation data and is subject to NTRP grievance. Does that mean what I think it does?