Following a Duel at Daytona accident the previous evening, Blake Harris, the crew chief for Hendrick Motorsports’ No. 48 Chevrolet, went to work on the backup machine Thursday, Feb. 13. The NASCAR Cup Series team toiled to match his teammate’s performance last season.
See which drivers are rising to the top and which fell behind after Sunday's Ambetter Health 400 at Atlanta Motor Speedway.