Two weeks on from a double disaster for Gresini Ducati at the Americas GP when both Alex and Marc Marquez suffered crashes, the brothers led the 45-minute FP1 at Jerez on Friday morning.
Eight-time world champion Marc Marquez led for much of the session, but ended up 0.507 seconds adrift of his team-mate Alex Marquez after he fitted fresh soft tyres to produce a 1m36.630s at the end of FP1.
Americas GP winner Maverick Vinales led an Aprilia 3-4 from Aleix Espargaro, while Franco Morbidelli was fifth on the leading factory-spec Ducati for Pramac.
Championship leader Jorge Martin was a low-key ninth on the sister Pramac Ducati, while reigning world champion Francesco Bagnaia was 12th.
Vinales picked up where he left off at the Circuit of the Americas by setting the early pace in FP1 at Jerez with a 1m39.113s inside the first five minutes of the session.
This was quickly beaten by Marc Marquez on a 1m38.784s, before Vinales fired in a 1m38.738s just seconds later.
Trackhouse Racing Aprilia’s Raul Fernandez was the next rider to move to the top of the order with a 1m38.637s with six minutes of the session gone.
Source: Autosport