After his younger brother, Ryan Truex, earned his first Xfinity Series win Saturday at Dover, Martin was first off pit road during a late-race caution thanks to a two-tire stop.
He quickly cleared Ryan Blaney for the lead on the restart with seven laps to go and edged Ross Chastain – who took four tires on his final stop – by 0.505 seconds at the checkered flag to earn his first win of the 2023 season.
