NFL updates gambling policy, reinstating Lions WR Jameson Williams and Titans OL Nicholas Petit-Frere.
The changes include stricter penalties for betting on NFL games.
Players who bet on their own team face a two-year suspension.
Lifetime ban for actual or attempted game fixing.
Inside information sharing results in indefinite suspension.
Reduced penalties for betting on other sports at work.
First-time offenders face two-game suspensions.
Self-reporting and cooperation can lessen penalties.
These changes affect only Williams and Petit-Frere.
NFL and NFLPA prioritize protecting game integrity.