After a chaotic five weeks of the 2021 college football season, there are only 17 undefeated teams left in college football.

The B1G makes up nearly a quarter of those undefeated teams as there are four teams from the conference still left unbeaten.

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The B1G still has Iowa, Penn State, Michigan, and Michigan State left as their undefeated teams going into week six of the season.

On Saturday, there will be at least one team gone from the list of undefeated teams in the B1G as Penn State will have to face Iowa in Iowa City.

The race for the College Football Playoff is becoming tighter as there is no room for errors in the playoff race. Ohio State lost to Oregon in week two and their road to the playoffs has been hurt with Oregon losing to Stanford 31-24 in overtime on Saturday.

The B1G has the most undefeated teams than any other conference in college football coming out of week five.