TIM237:
I barely made it to master and ever since ive been around a 70 avg which makes me a pro but my tier doesn't change? can you go down a level?
No, your tier does not change. You cannot go down a level. Once you reach a higher level, you are there for good.
TIM237:
I also see several amteurs or pros who mix in an 89-100 score to keep their avg in that tier range so they are not moved into a higher class is that being looked at?
Yes, this is being looked at. It's called sandbagging, which is when a player intentionally keeps himself at a lower tier, even if he's capable of playing well at a higher tier, because he can dominate WGT-sponsored tournaments and horde huge amounts of credits. Unfortunately, there is no way to guard against this, because non-sandbaggers can fluctuate good and bad scores, and sandbaggers can fluctuate good and bad scores but still not earn credits in tournaments.