Watch as the green flag drops for the NASCAR Xfinity Series New Holland 250 at Michigan International Speedway....
Watch as the NASCAR Xfinity Series takes the green flag on Saturday afternoon at Darlington Raceway....
The green flag flies as the NASCAR Xfinity Series goes racing at Nashville Superspeedway....
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In the final two laps of the Xfinity Series race at Portland International Raceway, fierce battles for position lead to a season-first winner....