Do NTRP rankings degrade with time? I just found out that a player on another team who went to 4.0 Nationals 4 years ago is now playing on a 3.0 team. It does not look as though he played in any USTA events between then an now but appears to have reregistered under a similar (but slightly different) name. Is this legal? Can a person who's rated 4.0 leave the game and come back as a 3.0 several years later? Does the NTRP computer take into account time away from the game?