Xfinity Series hits a million viewers yet again (1.008 million this time) on The CW. Up 16 percent from last year’s Iowa race on USA (which was in June) and up 23 percent from the comparable date on the schedule last year (Daytona).

Who won the NASCAR Xfinity Series race at Iowa? Sam Mayer is the winner, plus full NASCAR Xfinity Series results at Iowa Speedway

Mayer, 22, of Franklin, Wisconsin, held off Reiley Herbst in overtime in the June 2024 Hy-Vee Perks 250 at the Iowa Speedway. On Saturday Aug. 2, Mayer cruised to his second-straight win in the Xfinity Series race after a late restart.