The 28-year-old Blaney from High Point, North Carolina, survived an overtime shootout against Denny Hamlin to cash in a million dollars for the first time in his career at the Lone Star state.
With two laps to go, Joey Logano used his bumper to move leader William Byron out of his way, take over the lead and cruise to his first win of the season in the Goodyear 400 at Darlington Raceway.
Joey Logano won the pole for the NASCAR Cup Series Goodyear 400 at Darlington after posting a lap of 28.805 (170.720 mph) Saturday morning during qualifying.
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 two-time Cup champion from Las Vegas, Nevada, benefitted from a final lap collision involving Tyler Reddick and Chase Briscoe to become the ninth different competitor to reach 60 victories in NASCAR's premier series.
The reigning NASCAR Camping World Truck Series champion persevered on a five-lap dash to the finish to cap off a dominant run with his first victory of the season and on Bristol's dirt course.
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 2018 NASCAR Cup Series champion will be making a one-race return to the Truck Series for David Gilliland Racing next weekend on Bristol's dirt layout.
