The NASCAR O’Reilly Auto Parts Series returns to Iowa Speedway this Saturday for the 23rd points-paying race of the 2026 season. Sam Mayer enters the weekend as the defending winner at the track, looking to repeat his past success as the series picks back up after an off week.
A total of 37 cars appear on the official entry list for the event. The field features two notable debuts as drivers test their skill in the series. Derek Lemke takes the wheel of the No. 91 DGM Racing Chevrolet for his first series start. Lemke comes to the event with experience from the NASCAR Craftsman Truck Series.
Also making his series debut is 18-year-old Carson Brown. He will drive the No. 32 Chevrolet for Jordan Anderson Racing. Brown is a development driver for Richard Childress Racing and currently holds a win in the ARCA Menards Series this season.
Fans can catch the race action on Saturday at 5 p.m. ET. Coverage is available on The CW and ESPN Unlimited. Radio broadcasts will air on MRN Radio and SiriusXM NASCAR Radio. This race represents a significant mid-season marker as teams push for points with the playoffs ahead.