I am pretty-sure, this info is Incorrect.
( Unless something has changed over time ? )
You have to play tours.
I am a tour master ... and have never averaged 63 / 65 or less !
For that matter ... I don't think I ever shot a 63.
My LOWEST avg. has been a 65.12
Tour Master and Master are the same things.
1. Master Tier - Is achieved by playing ranked - stroke games.
2. Tour Master Tier- Is achieved by playing Tour - ranked - stroke games.
3. I have played very few . . . ranked-stoke games.
mostly weekly + monthly tournys.
If you play mostly ranked Stroke - games, and not so many Tournys, I am probably correct .
but .. I could be wrong ?