The track improved in the first laps of the practice session; but as soon as the majority of teams changed suspensions; dics brakes and tyres the rain came back with a vengence; no useful time were really made.
Zarco and Lorenzo lead the session when the conditions went to worse…
Frenchman and Spaniard headed out in tricky mixed conditions first – before the rain returned
Johann Zarco (Monster Yamaha Tech 3) and Jorge Lorenzo (Ducati Team) went quickest in a wet and tricky MotoGP™ FP4 at Assen, before conditions then worsened and the times remained top. Alvaro Bautista (Pull&Bear Aspar Team) and Jack Miller (EG 0,0 Marc VDS) were third and fourth.