Nationwide: Busch finished seventh in final practice and qualified second to teammate Denny Hamlin. In matching Z-Line cars, they took the front row. However, Busch couldn't keep up with Hamlin. Although he never dropped out of the top 10, he did drop down to eighth around lap 40. He came back and led the race for 17 laps and eventually finished second. This would give Busch his third top-10 finish in seven races at Darlington and his seventh top-10 finish of the season.
Cup: The Cup race was a roller coaster for Busch. He finished sixth and 15th in practices. He then qualified 39th but had to start at the rear of the field (43rd) after going to a backup car. Busch turned his night around, quickly moving through the field. He led twice for 29 laps and at one point was fighting for position with his brother. After the final pit stop, they made adjustments to the car which made it fall back. He ended the race seventh, leaving him third in points.
Busch had a great and steady day. He finished seventh and third in practices and qualified fourteenth. Although he never led any laps, he had a great battle with his brother for top-five positions (at one point, they made a “Busch Sandwich” with Jamie McMurray...let the Big Mac jokes flow...). He finished in third. This would be Busch's fifth top-10 finish in 14 races at Darlington. He now stands eighth in points.
Gaughan finished 29th in final practice and qualified 11th. However, his race didn't start so well when he took a solo spin on the third lap. He made it back on the track and slowly made his way through the field and finished 33rd, 63 laps down. This race left him 13th in points, taking him out of the top 10 in points.