Tom Bowles: Five things we learned at Michigan

[SRNewsBot]

Four races left to the Chase meant 400 miles at Michigan in a sneak preview of how the playoffs could shake out. Fontana's twin sister, this two-mile oval serves as a true testing ground for teams looking to conquer a track type that makes up five of the ten races on NASCAR's postseason schedule. It's exactly the type of moment title heavyweights have used to assert themselves and step towards the front of the pack in recent years.

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