Roger Goodell, NFL's Thursday Night Football flex is pure greed
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NFL approves 'Thursday Night Football' flex scheduling — but only
NFL expands flex scheduling to Thursday Night Football - Sports
NBC Sunday Night Football, American Football Wiki
2023 NFL schedule is set, but Thursday night flex could create chaos
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2019 NFL season - Wikipedia
NFL owners approve flex games on Thursdays, award draft to Packers
Why NFL flexes games and how changing the schedule works – NBC