Jeff Haynes/Associated Press
The N.F.L. suspended Josh Shaw, an injured defensive back on the Arizona Cardinals, through at least the end of next season for betting on football games this year, the first such penalty in more than two decades.
The league said its investigators found no indication that Shaw used inside information or compromised any game, and his coaches and teammates were unaware that he was placing on bets on N.F.L. games.
Still, the league took a hard line with Shaw, who cannot apply for reinstatement until after Feb. 15, 2021.
“The continued success of the N.