Well, as WGTSham has stated on another thread, all TL's has to play an additional 200 RR's to reach Champion tier. As far as what avg we need to meet for that tier, it is unknown. So, on top of the 779 rounds I have played in TL tier thus far, I have to contribute another 200 rounds to get to Champion tier.
As far as the averages blowing up, I believe someone has already mentioned that WGT acknowledges that it was a mistake and a possible bug. I'm just wondering if they will fix everyone's avg's back to where it was prior to the update. I doubt they will do it but I already set my mind into grinding again to get my avg back under 60, AGAIN!!