The rookie driver prised an opening over Guenther in the first sector, getting just under half a tenth ahead, but was able to extend his advantage - and Fenestraz's eventual 1m07.848s was far too much for the German driver to beat.
Despite showing great speed throughout the weekend and having headed FP2, Nick Cassidy had been brushed aside in the semifinals by Fenestraz by just over a tenth, as the Franco-Argentine booked his first finals appearance.
