The Australian set the fastest lap in the weekend’s only practice session for the REV Group Grand Prix presented by AMR Doubleheader at Road America. Power, who won the NTT P1 Award at Road America en route to victory in 2016, denied Meyer Shank Racing’s Jack Harvey a little bit of glory for second straight weekend. Harvey, who started on the front row at the Indianapolis Motor Speedway a week ago, looked set to top an NTT INDYCAR SERIES session for the first time in his career with lap of 1:46.1606 before Power took the top spot.

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