Riley Dickinson made a last-lap improvement to set the pace in the one-and-only practice session for Porsche Carrera Cup North America ahead of qualifying for this weekend’s title-decider at Circuit of The America.
Dickinson's No. 91 Porsche 911 GT3 Cup car achieved a time of 2:08.225, edging out championship rival Ryan Yardley by 0.176 seconds.
Dickinson leads Yardley by just two points going into the final two races of the single-make series season.
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Author's summary: Dickinson leads Yardley in COTA practice.