Joey Logano&nbsp;remains the only driver to have secured a place in the Championship 4, courtesy of his victory at Las Vegas.&nbsp;Ross Chastain&nbsp;leads all others on points after back-to-back runner-up finishes.<br>Chastain is 19 points above the cut line, followed by&nbsp;Chase Elliott +11 and William Byron +5 points.<br>Below the cut line entering Martinsville are&nbsp;Denny Hamlin, Ryan ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/nascar-cup-martinsville-schedule-how-to-watch/10391332/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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