TRACK: Bristol Motor Speedway RACE: Food City 300 (300 laps / 159.9 miles) DATE: Friday, Sept. 17, 2021 Broadcast Information: TV 7:30 p.m. ET on NBCSN/Radio: 7 p.m. ET on PRN and Sirius XM Ch. 90 Notes: Sam Mayer will make his first NXS start at Bristol this weekend in a special Tire Pros Chevrolet. This new scheme for Tire Pros was voted on by fans and features a metallic silver base with bright red and black accents. • Mayer’s last visit to Bristol saw the then 17-year-old