Sports economics Todd McFall said prop betting, especially on college games, does “two worrisome things when it comes to maintaining an environment in which gambling on games is more entertainment than a means for profit. First, it allows for those gambling on games to target specific players who didn’t meet a gambler’s expectations, and thus causing the gambler’s wager to fail. Second, prop bets open the window of players finding ways to profit from the gambling markets a little wider than when bets can only be made on outcomes.” Article