Ryan Blaney led 145 laps at Martinsville and won for the third time this season, and the second time in the playoffs, to clinch a Championship 4 berth.
Blaney joined 2021 series champion Kyle Larson and Christopher Bell as drivers who won their way into the Championship 4 while William Byron, the series leader with six victories this season, got in on points for this weekend's Championship races in Phoenix.
The highest finisher among those four will be the champion.
Regular season champion Martin Truex Jr. and Joe Gibbs Racing teammate Denny Hamlin, Chris Buescher and Tyler Reddick were eliminated from title contention.
Chevrolet clinched its 42nd manufacturer championship when the race began at Martinsville, giving Chevy its fifth sweep of the manufacturer title in the Cup, Xfinity and truck series.
Practice is 7 pm tonight. Qualifying is 3:30 pm Saturday and race time is 2 pm Sunday.
Riverton-native Justin Allgaier beat Sheldon Creed in a door-to-door overtime battle at Martinsville to earn his sixth attempt at an Xfinity Series championship this weekend in Phoenix.
Allgaier joins Sam Mayer, who won his way in, and John Hunter Nemechek and Cole Custer in the Championship 4. The top finisher at Phoenix among those four will be a first-time champion.
Creed needed a victory to advance but finished second by 0.032 seconds. He was eliminated along with Austin Hill, Sammy Smith, who led 147 of the 256 laps, and Chandler Smith.
Practice is tonight at 6 pm. Qualifying is 2:30 pm Saturday and race time is 6 pm Saturday evening.
Carson Hocevar earned his fourth career victory — all this season — and first NASCAR Truck Series Championship appearance with a victory at Homestead-Miami Speedway.
Hocevar joins regular-season champion Corey Heim, Grant Enfinger and 2021 series champion Ben Rhodes in the Championship 4 for this weekend's Championship race Friday night.
Defending series champion Zane Smith was disqualified after finishing second at Homestead-Miami for using an unapproved windshield support. Hocevar leads all drivers with four victories this season. Heim, Enfinger and Christian Eckes all won three times.
Practice was last night. Qualifying is tonight at 5 pm and race time is 9 pm this tonight.
