bwsq: So I just hit tour legend today and my average is 59.99. Do my ranked rounds reset to 0 in addition to my average?
The count relevant for the average will be reset to 1 after the next round. That score will become the new average.
As DonCaron said, it may be worth to note the current RR count of 963 for future reference - it's 750 rounds to C saturation ;)