NFL has done a much better job at educating players on gambling policies, according to athletes

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Detroit wide receiver Jameson Williams and Tennessee right tackle Nicholas Petit-Frere begin six-game suspensions Tuesday for betting at work. At least they'll be able to rejoin their teams this season.

Other players caught up in a wave of gambling-related suspensions will be gone much longer, if they're allowed to return at all.

Detroit cut three of Williams' teammates in April. Indianapolis also released three players within hours of the NFL announcing their indefinite suspensions. Just before training camp, Denver defensive end Eyioma Uwazurike became the 10th player punished this year for either gambling on the NFL or other sports.

The punishments have led to an ongoing conversation about betting and the integrity of the game, attracted attention in Congress and even prompted the NFL to get Tom Brady for a video on its gambling policy that rookies must watch as the league tries to clarify its rules. Players have noticed, and they say the NFL has done a much better job of educating them on exactly where and what they can bet on, especially helpful with smart phones and tablets making wagering so easy.

"They made what has been broken very clear — after the fact," Detroit linebacker Alex Anzalone said.

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The NFL's mandated training this year included both league and NFL Players Association officials and emphasized six key rules:

"Last year, they didn’t give it to us like that," Detroit cornerback Jerry Jacobs said of all those details. "They just told us we can’t gamble, but they didn’t tell us where."

Yet even with more education, challenges will remain in a league with 18