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.
Running in the top-10 before both cars were taken out in a massive lap 262 crash during Sunday's Goodyear 400 at Darlington seemed par for the course for the 23XI Racing Toyotas of Kurt Busch and Bubba Wallace.
The 29-year-old Chastain from Alva, Florida, rallied from an early pit road speeding penalty to overtake Erik Jones on the final lap through the tri-oval to claim his second career win in NASCAR's premier series.
The 24-year-old Byron from Charlotte, North Carolina, led a race-high 212 of 403 and fended off Joey Logano during an overtime shootout to repeat as a Cup winner at the Paperclip-shaped short track.
The three-time Daytona 500 champion from Chesterfield, Virginia, fended off Kevin Harvick in the final five laps to notch a breakthrough victory at his home track.
The Mitchell, Indiana, native became the 200th different competitor to achieve a win in NASCAR's premier series following his first career victory in the desert state.
The Tucson, Arizona, native made a late two-tire pit strategy work to his advantage after fending off teammate Larson in overtime to capture first victory at Vegas.
The reigning NASCAR Cup Series champion led four times for 28 of 200 laps and fended off the field in a four-lap shootout to claim his second victory at Auto Club Speedway.
