Originally Posted by Chuck Kennedy
Your PDGA rating will include rounds rated during leagues. There's no difference in what rating a player averages at Worlds/NTs/A tiers versus B-tiers versus C-tiers. There's probably more difference in the competition environment between NTs and C-tiers than there will be between C-tiers versus leagues.
Besides, more data points means a more accurate look at your true rating. A rating based on 50 rated rounds is more accurate than a rating based on 15...