William Byron entered Sunday's NASCAR Cup Series Cook Out 400 at Martinsville Speedway with a 36-point lead over Kyle Larson in the regular-season championship standings. After a 22nd-place finish (full Cook Out 400 results here) in the Cook Out 400, Byron saw his point lead take a hit, but he was able to cling onto a 16-point lead.
The biggest gainers in the championship standings post-Martinsville were Todd Gilliland, who finished 10th and Ty Dillon, who finished 15th. Both drivers vaulted four spots up in the standings. Gilliland moved to the 22nd-spot in the standings, while Dillon now sits in the 25th position.
Josh Berry, who won a few weeks ago at Las Vegas Motor Speedway dropped seven spots after a disappointing 32nd-place finish at Martinsville following an alternator issue. Berry sits 19th in the regular-season standings, but is locked into the Playoffs by way of his Las Vegas win.
# indicates Rookie of the Year contender
* indicates "Open" entry
(i) indicates driver ineligible to score NASCAR Cup Series points
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