What is the meaning of Clinched playoff berth ? - Question about

NFL playoff picture 2019: Which teams clinched a spot in Week 16?

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Instead of clinching a playoff spot on Sunday, the Cowboys got something better — the No. 2 seed

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NFL playoff permutations for Week 18: Packers and Patriots to win wild card spots? Eagles to clinch No 1 seed in NFC?, NFL News

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