didanz: I do not understand the elevation to Master.
Tiering up is bound to the average. As a TP, it was calculated from the best 25 of your ranked scores, excluding the Bo3 and Bo5 courses.
You have good equipment (G20 and such), thus it was almost inevitable to advance.
I've seen some 32, 33 and 34 scores in your history - they are doubled, and the last 34 = 68 must have carried you to or below 67.00 for said mix.
On tiering up, the numbers have been reset. Next threshold is a 63 average from 40 games to become Tour Master - good luck!