introduced for 2017. At Kansas in May 2017, Truex started 4th. The race was primarily a duel between him and Ryan Blaney. Truex held off Blaney, Kevin Harvick, and a hard-charging Brad Keselowski on three restarts to win the race. At Charlotte, he led the most laps once again, becoming only the second man to lead the most laps in three straight Coca-Cola 600 races, yet only winning one. He tied Darrell Waltrip's record. At Michigan, he won 2 more stage wins, becoming the first and fastest person to ever win 10 stage wins, where nobody else has won more than four, or any other team's combined stage wins. In July, Truex captured his third win of the season, dominating the Quaker State 400 at Kentucky Speedway. He again won all three stages, leading 152 of 267 laps. With two laps to go, Truex had a 14-second lead before a late caution set up an overtime finish. Despite each of the other seven cars behind him pitting during the caution, Truex held off Kyle Busch and Kyle Larson on older tires before a wreck behind the lead pack brought out another yellow flag, this one ending the race. Truex took home his fourth win of the season in August winning the I Love New York 355 at The Glen, capturing his first win at Watkins Glen International Speedway. After finishing 2nd in the first two segments of the race, Truex took the lead with 36 laps to go from Brad Keselowski but relinquished the top two spots to Keselowski and Ryan Blaney to save fuel. The strategy paid off, as Keselowski went to pit road with five laps remaining, while Blaney went one lap later, giving Truex the lead. He was able to make it to the finish, holding off Matt Kenseth as he was running out of fuel for his second career road course victory. It was an emotional win for the #78 team, as Pollex returned to victory lane with Truex after missing the Kentucky win due to a cancer recurrence, while his crew chief Cole Pearn helped earn the win while coping with the loss of his best friend, Jacob Damen. Two races later at the 2017 Bass Pro Shops NRA Night Race at Bristol Motor Speedway, Truex had a chance to clinch the first regular-season title in NASCAR history if he left with a points lead