NFL playoff picture entering Week 18 2021: AFC, NFC clinch scenarios
NFC No. 1 Seed Playoff Scenarios: Eagles, 49ers, Cowboys, and Vikings Path to First-Round Bye
NFL Week 18 playoff clinching scenarios: Full AFC, NFC breakdown
Playoff scenarios for former Mountaineers in final week of NFL regular season
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NFL Week 18 playoff-clinching scenarios, coaching firings and No. 1 pick predictions - Sports Illustrated
NFL playoff picture 2021 - Week 17 standings, bracket, clinching scenarios, division races and postseason outlook - ESPN