Rajah Caruth is set to return to JR Motorsports this weekend at Iowa Speedway, taking over the No. 88 Chevrolet for the final stretch of the 2026 NASCAR O’Reilly Auto Parts Series season,. However, Caruth’s initial agreement with JR Motorsports only covered 23 of the 33 scheduled races. With Caruth transitioning back to JR Motorsports, Carson Brown—an 18-year-old development driver for Richard Childress Racing—is scheduled to make his series debut in the No. How to Watch The Hy-Vee PERKS 250 at Iowa Speedway is scheduled for Saturday, August 8, with live coverage beginning at 5:00 p.m.