With sports betting more popular than ever, professional leagues and integrity firms that monitor games have increased visibility into bets placed on their matches. But the leagues haven’t always liked what they see.

The NBA has a ban on in-uniform players, coaches and staff placing bets on any game if it’s legal to do so in their state of residence. This also includes the use of inside information that a player or employee could reasonably be expected to know would be useful for betting purposes. The ban also covers the offering of a bribe to fix a match or event within a match.

Generally speaking, any markets that are deemed to be “live” (for example, money lines) will pay out based on the official result of the game, including overtime scores. Outright/tournament winner bets on collegiate events will be settled based on the official results of the tournament, regardless of any amendments made after the final table (points dedications). Markets that are declared “void” will see all bets refunded (including ones that were already settled).

The NFL’s rulebook prohibits players from participating in gambling pools such as Super Bowl squares and NCAA tournament brackets. The league will suspend any in-uniform player, coach or team staff member for breaking this rule. Last season, the NFL suspended Isaiah Rodgers and Rashod Berry of the Indianapolis Colts for placing bets on games. And earlier this year, Alabama baseball coach Brad Bohannon was fired after being linked to a betting scandal.