<P> Before being awarded the regular season championship at Richmond, Truex dominated the Federated Auto Parts 400 leading 50% of the race . However, his race derailed when Denny Hamlin wrecked him on the final restart . Truex, though clinching the regular season championship, expressed discontent with 1990 Daytona 500 champion, Derrike Cope who caused a caution that changed the outcome of the race, leading up to the wreck . The regular season championship was Truex's first top - level championship in his Cup Series career . </P> <P> Truex started the playoffs on a high note, winning the first race of the playoffs, and his 5th win of the season at Chicagoland Speedway despite a pit road speeding penalty early in the race . With that win, this allowed Truex to secure a spot for the Round of 12 . He later earned himself a 5th place finish at New Hampshire Motor Speedway, although being involved in a 8 - car pileup with minor damage midway through the race . </P> <P> To start off the Round of 12, Truex scored his 6th win of the season at Charlotte after leading 91 out of 334 laps to secure a spot for the Round of 8 . Just two weeks later, he scored another win at Kansas despite having a restart violation early in the race . </P> <P> Truex and his girlfriend Sherry Pollex have been together since 2005 . In 2007, they started the Martin Truex Jr . Foundation to support children with pediatric cancer . In 2014, Pollex was diagnosed with Stage III ovarian cancer . </P>

How many races has martin truex won this season
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