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

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The First Read, Week 16: Who's clinched a playoff berth? Helped/hurt their chances?

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Clinched playoff berth 】とはどういう意味ですか？ - 英語 (アメリカ)に関する質問

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What is the meaning of Clinched playoff berth ? - Question about English (US)

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After clinching playoff spot, AFC-leading Ravens to be tested in Christmas showdown at San Francisco, Sports