finding value and having a skill slightly above average to pick winners are both necessary, and while in theory this may seem easy it is something that is incredibly hard to do.
If you're really a sports enthusiast, that would just be an easy task for you. With their skills, I believe it's even possible that they could make it as an extra source of income. Sports betting is the least risky form of gambling for me. As long as you're knowledgeable enough on the match that your betting then your chance to win is higher compared to other gambling games.