July 7, 2026, 5:30 a.m. CT Wisconsin drivers Sam Mayer of Franklin and Parker Retzlaff of Rhinelander are contending for spots in the NASCAR O’Reilly Auto Parts Series championship chase. Mayer, 10th in the standings, feels he should have won multiple races this season but has been hampered by misfortune and mistakes. Retzlaff, sitting ninth in the standings, is aiming for his first career win and a playoff berth with his young team.