Veteran Joe Gibbs Racing crew chief Dave Rogers will take an indefinite leave of absence and has been replaced by Scott Graves as crew chief for NASCAR Cup rookie Daniel Suarez.
No reason was given for Rogers' sudden departure other than he was taking a "personal leave for an indefinite period of time," which the team announced in a brief statement Wednesday night.
Suarez is 19th in the standings after five races as the replacement for recently retired Carl Edwards.
Rogers had led Edwards to the NASCAR Cup championship round last year and has worked with drivers Kyle Busch, Denny Hamlin, Edwards and Suarez as a Cup crew chief. The 42-year-old Rogers has 20 career Cup wins and has led drivers to six playoff berths.
Graves had won back-to-back Xfinity Series titles as a crew chief with Chris Buescher at Roush Fenway Racing in 2015 and then with Suarez at JGR in 2016. Graves had been crew chief for the JGR No. 18 Xfinity Series car, which was being driven by Busch and others this year.