Keith Warren is probably the Best Non-Sponsored disc golfer in the country, i have seen him play in A Tiers against top ranking pros in which he won 1st place consistently. He only plays a few tournaments a year though because he is always working, he doesn't even play leagues.. can't imagine how good he would be if he was a sponsored touring pro.
Hands down, he has natrual skill.
Came here to say Keith Warren.
One of THE best un-sponsored players around.