Credit One NASCAR Amex Credit Card 300 Full Race Results: Austin Hill pulled off an exciting win at the Credit One NASCAR Amex Credit Card 300, passing Cole Custer with just 12 laps to go at Homestead-Miami Speedway. Austin Hill’s smart moves, picking the right lines and careful throttle control, helped him claim his fourth win of the season and his tenth in the NASCAR Xfinity Series. This victory was emotional, showing his resilience and the hard work of his No. 21 team. As the NASCAR season heads toward crucial standings, every driver’s strategy will be key in the intense competition coming up.