William Byron Wins First Career Race at Iowa ' 2017 XFINITY SERIES ' FOX NASCAR

William Byron Wins First Career Race at Iowa ' 2017 XFINITY SERIES ' FOX NASCAR

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NASCAR Xfinity Series Highlights: William Byron pulls away from the field on the final restart at Iowa to win his first career race.

JUNE 25, 2017・Xfinity Series・1:58

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