Shortly before the NFL announced that Arizona Cardinals defensive back Josh Shaw was suspended through at least the 2020 season, the league sent a memo to all teams reaffirming that any employee found gambling on football would be terminated, league sources told ESPN.

The league has outlined its stance in the past, but in light of Shaw's recent suspension for betting on NFL games on multiple occasions this season, it felt the need to remind all 32 teams again.

The Cardinals were unaware the league was investigating one of its players, according to sources, because Shaw spent only a brief period of time with the team this past summer before being placed on injured reserve.

Below is the NFL's wording on its rules for players returning from COVID-19 cases. Nine Super Bowl 55 MVP sleepers, from best bet Tyreek Hill to longshot Scotty Miller. Football Betting Rules Includes NFL, NCAA College Football, CFL, and Arena Football. In the event of a game not playing on the scheduled date or original. Overtime does not count for quarter and half-specific markets, except NFL fourth quarter betting. For quarter and half betting, the entire period must be played for bets to stand. In the event of a tie, bets are refunded. Overtime counts, except for Double Chance betting, In the event of a tie following overtime all bets are refunded. Football For wagering purposes, a football game (NFL or college) becomes official after fifty-five (55) minutes of play. Games lasting under 55 minutes constitute 'No Action' or 'Push/Cancel' and all money is refunded. Wagering on the game period spread, moneyline, or total (over/under) include any overtime scoring. The bet amounts can be more or less, and the payout will depend on the pro-rata basis. Other NFL Betting. Aside from the two popular bettings, which are the money line and betting on totals, there are other ways you can bet on the NFL. Betting NFL teasers and betting NFL futures.

Since then, Shaw has not been around the Cardinals' complex, and they have not maintained any regular contact with him. So when the league publicly announced Shaw's suspension Friday, it surprised the Cardinals.

The NFL's investigation into Shaw did not uncover evidence that indicated he used inside information or that the integrity of any game was compromised. The NFL also announced that Shaw's teammates, coaches and other players around the league were not aware of Shaw's gambling.

Betting on football is one of 10 restrictions on legal gambling that the NFL laid out in its gambling policy.

'All NFL Personnel are prohibited from placing, soliciting, or facilitating any bet, whether directly or indirectly through a third-party, on any NFL game, practice or other event,' the policy states. 'This includes betting on game outcome, statistics, score, performance of any individual participant, or any other kind of 'proposition bet' on which wagering is offered.'

Shaw can petition for reinstatement on or after Feb. 15, 2021, if his potential appeal is denied.

Suspensions of NFL players for betting are rare. The highest-profile case was in 1963, when Paul Hornung of the Packers and Alex Karras of the Lions were banned for the entire season. Both were reinstated the following season, and Hornung was eventually inducted into the Hall of Fame.

In the most recent case, Baltimore Colts quarterback Art Schlichter was suspended in 1983 for betting on NFL games and other sporting events. He, too, was reinstated the following year.

The Cardinals signed Shaw on March 18 to a one-year contract worth $850,000. He has made more than $3 million in his career.

Shaw, 27, was drafted by the Bengals in the fourth round of the 2015 draft. After playing his first three seasons in Cincinnati, Shaw split time between the Chiefs and Buccaneers last season.

ESPN's Josh Weinfuss and The Associated Press contributed to this report.

The following is applicable to all Football games, including NFL, NCAA College Football, CFL and Arena Football.

Abandoned or postponed games are void unless rearranged and played in the same NFL weekly schedule (Thursday-Wednesday local stadium time), except for those bets that have already been determined at the time of abandonment or postponement.

If a game venue is changed, bets already placed will stand, providing the home team is still designated as such. If the home and away team for a listed game are reversed, then bets placed based on the original listing will be void.

In 2-Way markets Push rules apply, unless otherwise stated. Bet amounts on straight bets are returned, and in parlays the selection is treated as a non-runner. For example - in Handicap or Totals betting where the index (value) of the market is a whole number, bets are void and will be refunded where the score lands on that number.

All settlements are based on results and statistics provided by the relevant league’s governing body:

We reserve the right to suspend any or all betting on a game at any time without notice. For settlement purposes, the team listed first in the event name is always considered the Home Team. Example: Team A vs Team B - Team A is the Home Team.

Overview of Specific Markets

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For Live Betting purposes these rules apply unless stated otherwise.

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  • Where a Handicap Draw selection (3-Way Handicap market) is offered during live betting, only bets placed on the draw will be finalized as winners when the result lands on the whole number selected.

Prices quoted are for the whole game inclusive of any overtime played unless otherwise stated. As the markets are in-running, we reserve the right to close the market at any time.

  • When scores are displayed in running, every effort is made to ensure the accuracy of the score and game time; however, no liability is accepted for incorrect information displayed.

Proposition bets

For season-long proposition bets on the NFL (including custom bets), teams must complete at least the 16-game regular season for bets to stand.

Nfl Betting Rules

In the event of an abandoned game all bet amounts are returned, unless a result is already determined through the course of play that has taken place.

For player prop markets the player(s) in question must compete in at least one down to have action.

Nfl Betting Rules

All proposition bets are straight bets only. Overtime counts, unless otherwise stated.

Team/Player Passing Yards – Settlement is based on gross passing yards.

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Quarterback props are based on gross passing yards gained.

To convert a 4th down attempt - The ‘Yes’ option is determined by achieving a new set of downs, either by run, pass (this includes if a TD is scored as a result) or automatic 1st down penalty. Field goals (irrespective of being made or not) do not count as a converted down.

Quarter and half markets

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Handicap Betting

Overtime counts for game handicap betting. Overtime does not count for quarter and half-specific markets, except NFL fourth quarter betting. For quarter and half betting, the entire period must be played for bets to stand. In the event of a tie, bets are refunded.

Game betting

Overtime counts, except for Double Chance betting, In the event of a tie following overtime all bets are refunded.

Total points

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For quarter and half betting, the entire period must be played for bets to stand. In the event of total points being exactly the nominated line, all bets are refunded unless a price for the exact amount is quoted.

First team/last team to score

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In the event of an abandoned game, bets stand on scores that have taken place already. Overtime counts for these markets.

First/Last/Anytime Touchdown scorer

Forecast the name of the first/last/anytime Touchdown scorer in the game, or whether no touchdown will be scored. Only when a player is listed on NFL.com as 'inactive' for that game are the selections voided. ‘The field’ refers to any player not specifically listed. If no Touchdowns are scored, bet amounts will be lost unless ‘no Touchdown scorer’ is selected.

Will Either Team Score 3 Unanswered Times?

Forecast whether either team will score 3 consecutive unanswered times during the game. A Score excludes any PATs (point after touchdown or 2 point conversions).

Total Game Touchdowns/Field Goals

Predict the total number of Touchdowns/successful field goals in the game. Overtime counts.

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Will there be Overtime?

Predict whether or not there will be overtime. If a game is abandoned prior to the end of normal playing time (regulation) bets are void, unless it is the final of the competition in which case all bets stand for the rescheduled game.

Will there be a safety?

Predict whether or not there will be a safety in the game. Overtime counts. A safety will be awarded by the game officials and is the only means whereby a team not in possession can score points. It can occur in a variety of ways but the most common is when an opponent in possession of the ball is tackled in his own end zone.

Super Bowl MVP

Predict which player will be voted the Most Valuable Player in the Super Bowl. For Super Bowl MVP propositions, if there are co-MVPs, any bet related would be paid at full odds.

Longest/Shortest Touchdown Markets

Shortest Touchdown Scored, Fumble recovered in end zone, under is a winner. If there are no Touchdowns then bets are void.

Longest/Shortest Field Goal Markets

If there are no successful Field Goals, then bets are void.

Winning Margin

Predict the team to win the game and the margin.

Futures

All Futures markets include playoffs where applicable.

Super Bowl winner, Conference Outright and Divisional Futures bets stand regardless of the length of the season.

NFL Conference Winner

The team that progresses to the Super Bowl will be deemed the winner of the conference. NFL Divisional winner markets are determined by games won during the Regular Season (where appropriate NFL tie-break rules will apply).

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