they could have left it at 66 . One still has to saturate .
Think it over please.
An average is not just a number, it's a calculation from a pool of scores. Would you want to keep the Tour Pro scores in your bag while moving on as a Master? It wouldn't help, IMHO, while aiming at a 63 average to become a TM.
To me, "Master at 66" is a wee display glitch, 66 being the final TP average while the Master techincally doesn't have one before his first score.