Correct. That makes it improbable -- not purely lucky. And those are the best moments in sports. Ultiworld even put its take on the classic calls in sports history with the line, "in a tournament of improbable the impossible has happened..." The great moments in sports are about executing the improbable. Do football teams practice the hail Mary" pass at the end of a half or game? Sure they do. And it has to be executed to perfection to even have a slight chance of success. And it is rarely successful. Is it "lucky" when it is? Well, depends on the point-of-view. I'd say the "luck" for JC was that this happened to be one of the 1 or 2 out of 50 times he estimates he could throw it in. But that's not pure luck -- at least not any more luck than any other player. It's a shot he can execute but still needs all the stars to align for it to happen.
And for those who say Paul isn't lucky, well it's more than being the best. It's growing up in the right time period. Because I am older and have seen both play, I still believe Champ is the greatest disc golfer ever. I've seen them both play in their prime. But to those saying Paul is, just wait 20-25 years when you're my age and some youngster on whatever form social media has taken by then says to you that the "player of their generation" would smoke 'old Paul McBeth.' What will you say to them? Every era is different and every champion has some luck to win.