The three-time Supercars champion from Auckland, New Zealand, led a race-high 27 of 50 laps and out-muscled teammate Connor Zilisch at the start of a two-lap dash to notch his second consecutive Xfinity victory at the Windy City.
The 21-year-old Mayer from Franklin, Wisconsin, led 13 of 72 over-scheduled laps and overtook Parker Kligerman during an overtime shootout to notch his third Xfinity victory of 2024 and race his way into the Playoff's Round of 8.
