~snip~
This is correct 95-98% of the time. However there are truly long term winners in sports, baccarat and poker that have withstood the test of time. Google Phil Ivey and Stu Ungar as examples.
If you have sports where people will compete against themselves over time, instead of against the casino, then you will see eventually a pattern where only a few will win more times.
This is basically the Pareto distribution, where a small number of individuals get the most amount of the "pie".
It's just luck, in the same way that Paul the Octopus was able to predict 12 out of 14 correct matches, that's being right 85.7% of the time.