The 2021 regular season featured three games between teams that were each at least 5-0 -- one each in Week 6 (Penn State-Iowa), Week 7 (Georgia-Kentucky) and Week 9 (Michigan-Michigan State). We haven't had two such games in the same regular-season weekend since 2019, and we haven't had three since Week 7 in 1993, a weekend highlighted by one of the greatest Auburn-Florida games ever.
I guess I should say we hadn't had three in one week since 1993. With Alabama-Tennessee, Penn State-Michigan and Oklahoma State-TCU, we've got three unbeaten battles on the docket, plus three other ranked-versus-ranked games.