You are much better off from a bookmaker's business point of view just hiring a load of mathematically competent and cheap worker drones to copy Betfair/Pinnacle/Wider industry prices, build a few algorithms for in play betting and very closely manage the liabilities as the bets come in. Then just restrict all winners/arbers as quickly as you can and you have a profitable business with virtually no grasp of what a sport price even is.
You see, although this article is named “The Best Sports for Betting,” there’s really no such thing. There are definitely sports that WE think are better, but not everyone is going to have the same opinions. The best sport for one person to bet on might be a terrible sport for someone else. It depends on several different factors. A similar principle applies to whether it’s best to wager on one sport, a couple of sports, or a variety of sports. There’s no “optimal” number of sports here. Again, there are a lot of factors that come into play.
ATS equals “against the spread”. The spread is the number oddsmakers use to give people other betting options besides only wins and losses. A spread for a Premier League fixture would be something like .5 or 1.5. One club would need to lose the match by no more than 1 or 2 goals or the other needs to win by 1, 2or more goals. If the final score doesn’t reflect the number set by the oddsmakers, your bet won’t cover the spread and you can’t win your bet.