Sam Mayer grabs a NASCAR Xfinity Series victory in overtime at Iowa Speedway on Saturday in the Hy-Vee Perks 250.

NEWTON, Iowa — In a race of tire management and hurt feelings, Sam Mayer held off Riley Herbst in overtime to win Saturday’s Hy-Vee Perks 250 in the NASCAR Xfinity Series’ return to Iowa Speedway after a four-year hiatus.