Thursday Night Football' flex rules, explained: How NFL's
NFL owners approve flex games on Thursdays, award draft to Packers
NFL approves limited flexible scheduling for Thursday night games
NFL owners approve modified 'Thursday Night Football' flex plan by
NFL owners approve flex scheduling for Thursday Night Football
NFL owners approve flex scheduling for 'TNF' games
NFL ownership passes 'Thursday Night Football' flex rule
NFL owners approve flex Thursday Night Football scheduling
NFL owners approve 'Thursday Night Football' flex scheduling
NFL Owners Approve Significant Change to Kickoff Rule Opposed by
NFL owners approved a proposal that will allow flex scheduling for
The New NFL Rule That Risks Fan Backlash - WSJ