Byron, who won the pole for this race a year ago, was among the last cars to complete laps at the end of 1½ hours of practice and with time already expired registered the fastest average lap speed of the day at 94.415 mph.Teams were split into two groups and each group given a pair of 20-minute sessions on the track since it’s the first road course race of the season with NASCAR’s new aero ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/william-byron-fastest-overall-in-nascar-cup-practice-at-cota/10590815/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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