FunkyWinklebean: FWIW. Just to add, on the tiers... It took me 28 Tour Master rounds to dip under a 61 average, and hit Legend (not 50)
Not so, you made TM 05 09 2112 and Legend 05 26 2112, between these days you played 50 ranked rounds.
FunkyWinklebean: Guess if you really wanted to know, you'd have to begin the Tour Master tier already below a 61 average.
Your average resets when you move up a tier so only ranked rounds at new tier make up your average.
FunkyWinklebean: Don't know how much sooner I could have reached it by shooting lower rounds
none, must have 50 rounds at TM before you can move up to Legend