Petrucci tops disrupted FP1 at Assen
23 June 2017 – Pramac's Danilo Petrucci led the way during a closely-contested, delayed first practice session for the Dutch Grand Prix at Assen.
The session was only a few minutes old when Andrea Dovizioso suffered a suspected engine failure, leading to oil being split onto the track surface.
Jorge Lorenzo and Jonas Folger both crashed, with the Tech 3 rider visiting the medical centre as a precaution, and the session was consequently red-flagged for almost half an hour, as cement dust was laid.
Times tumbled once the session resumed, with Petrucci ultimately vaulting to the front in the final stages, before he pulled off the circuit with smoke trailing from his bike.
Petrucci's lap of 1:34.680 was 0.126s faster than Tech 3's Johann Zarco, while LCR Honda's Cal Crutchlow, newly retained through to 2019, was third quickest.
Dovizioso recovered from his failure to place fourth, in front of Yamaha's Valentino Rossi, Suzuki's Andrea Iannone and Repsol Honda's Dani Pedrosa.
Folger and Lorenzo returned to action after their respective falls to place eighth and ninth respectively, leaving Karel Abraham to complete the top 10, just 0.503s behind Petrucci.
Championship leader Maverick Viñales enjoyed a spell atop the times but slipped to 12th overall amid improvements for rivals, while reigning champion Marc Márquez took 13th spot.
Friday's second practice session will begin at 14:05 local time