The 29-year-old Wallace from Mobile, Alabama, occupies the final Playoff vacant spot by 32 points over rookie Ty Gibbs approaching the regular-season finale of the 2023 season.
The two-time Xfinity Series champion from Corning, California, led a race-high 41 of 75 over-scheduled laps and outlasted the field through three overtime attempts for his first win of the 2023 Cup season in Austin.
The 28-year-old Wallace from Mobile, Alabama, led 58 of 267-scheduled laps, including the final 43, en route to his second Cup career victory at Kansas.
The 19-year-old grandson of team owner Joe Gibbs from Charlotte, North Carolina, will be substituting for Kurt Busch for a third consecutive Cup Series weekend at the Irish Hills.
Kurt Busch, the 2004 Cup Series champion from Las Vegas, Nevada, led a race-high 116 of 267 to notch his first victory in the Heartland State and his first driving for 23XI Racing.