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CONCORD, N.C. -- Hendrick Motorsports will not appeal the penalty announced today by NASCAR stemming from a post-race lug nut infraction Sunday at Darlington Raceway.

Travis Mack, 34, will serve as interim crew chief for the No. 88 NASCAR Cup Series team with driver Dale Earnhardt Jr. during this weekend’s event at Richmond Raceway. The Louisville, Kentucky, native has been the team’s car chief since 2015, serving under crew chief Greg Ives.

“We have a tremendous amount of confidence in Travis and everyone on the team,” said Jeff Andrews, vice president of competition at Hendrick Motorsports. “Our people have done a great job all year with the lug nut rule. We won’t dwell on it (the penalty) and will look forward to having Greg back on the box next week at Chicagoland.”

After joining Hendrick Motorsports in 2004, Mack worked as a mechanic for the Nos. 24 and 88 Cup Series teams. In 2013, he moved to Hendrick Motorsports affiliate JR Motorsports, where he served as car chief for drivers Regan Smith and Chase Elliott in the NASCAR Xfinity Series. Mack earned an Xfinity Series championship in 2014 as a member of Elliott’s team.