Do you believe someone who claims they have a "working method" to win in sports betting?
As we often see, there are a lot of accounts, usually newbies, claiming they have a winning method in sports betting. Some even brag about having an 80% (or higher) success rate.
I'm sure if he really succeeded, he would rather keep quiet and enjoy all the wins he got for his own pleasure fully, than having to tell other gamblers.
If they tell that, it means they have other plans, it might be related to several things like to get trust (whether he has other plans later), for prestige, or other things. Is it a cheat or real skill and ability?
But one thing is for sure, no one can be sure whether it is true or not, unless he has been around for years and can show proof, with all the wins he has. It also doesn't guarantee it because the odds or casinos might also change the system or several things related to the casino to prevent certain kind of "cheating".