Ty Dillon, John Hunter Nemechek, Ty Gibbs and Tyler Reddick advanced to the final four of the NASCAR In-Season challenge through their results on Sunday at Sonoma.
Shane Van Gisbergen won the Toyota Save Mart 350, but he was not involved in the In-Season Tournament.
Reddick and Gibbs used top-10 finishes to move on in their respective parts of the bracket.
Nemechek and Dillon did enough in their head-to-head battles to stay alive for the $1 million prize.
NASCAR In-Season Tournament Bracket
No. 32 Ty Dillon vs. No. 12 John Hunter Nemechek
No. 23 Tyler Reddick vs. No. 6 Ty Gibbs
The full NASCAR points standings can be found here.
Reddick and Gibbs turned in the more impressive individual races at Sonoma.
The drivers of the Nos. 45 and 54 cars are more known for their road-course success compared to the other two races who advanced.
Reddick had the best finish among all eight In-Season Challenge quarterfinalists in sixth place. Gibbs was one place behind the 23XI Racing driver.
Dillon and Nemechek were further down the field, but all that mattered for both racers is that they landed in front of their opponents in the bracket.
Dillon finished two places ahead of Alex Bowman in 17th to advance as the No. 32 seed. Dillon was the last player entered into the field, which was determined by cumulative points over the three races prior to the start of the In-Season Challenge.
Nemechek finished in 28th, one spot ahead of his opponent Erik Jones, to get into the Final Four.
The In-Season Challenge moves on to Dover Motor Speedway next Sunday.
Gibbs and Reddick right next to each other at Dover last year in 10th and 11th. Gibbs also took 13th at the Delaware track two years ago.
Dillon and Nemechek each don’t have great recent results at Dover, so that semifinal matchup will likely be determined further back in the field.
The two semifinal winners will race head-to-head at Indianapolis Motor Speedway in two weeks to determine NASCAR’s first In-Season Challenge winner.