I have read several threads about which is more difficult: winning at Sports betting, or winning at 21. It really depends on scale. If a person knows what to study, how to practice, and has $20k they are "comfortable" losing there are different curves for sports vs 21. 1/ No person lacking discipline and work ethic has a chance in either. On a small scale, sports is easier than 21. If you want to win at 21, you need to memorize basic strategy (unless you're @rxgamble, who is a unicorn at advanced techniques, and probably still has perfect BS). 2/