Jonathan Hassler will make his debut as a full-time crew chief during the NASCAR Cup Series’ All-Star Race weekend at Texas Motor Speedway, taking charge of Matt DiBenedetto and the No. 21 Wood Brothers Racing team.
Hassler, a longtime race engineer at Team Penske, has recent crew chief experience after commanding the No. 21 crew to a 12th-place finish in April at Martinsville Speedway and stepping in for Joey Logano’s crew chief, Paul Wolfe, last month at Dover International Speedway.
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Hassler is replacing veteran crew chief Greg Erwin, who spent the last three-plus seasons heading up the No. 21 team.
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DiBenedetto currently sits 17th in the playoff standings, one spot below the cutline.
Hassler’s first test will be during Sunday’s NASCAR All-Star Open (6 p.m. ET, FS1, MRN and SiriusXM NASCAR Radio).