Team Penske has announced a crew chief swap for Austin Cindric and Harrison Burton leading into the playoff opener at Darlington Raceway.
Jeremy Bullins, who made the Championship 4 in 2020 with Brad Keselowski, joins the No. 21 team to guide Burton. Meanwhile, Brian Wilson will lead the No. 2 team, as the duo amassed 13 wins in the Xfinity Series and won the 2020 championship.
Cindric ranks 22nd in the championship standings after the regular season while Burton is 30th.