It looks as though Martin and A. Espargaro are going for a time attack run despite it not counting towards the top ten.
Marc Marquez has lost the front-end at turn five.
Quick lap from Brad Binder as the KTM rider replaces Bagnaia in third.
Honda are having a nightmare session in terms of pace as Marc Marquez and Joan Mir, who are circulating together, are 19th and 21st currently.
Vinales goes quickest as he nearly breaks into the 1m 39s barrier. Vinales had a new medium rear fitted.
Vinales is on a cracking lap and could go back into P1...
The gaps from second to tenth remain very close but Aleix Espargaro still leads the way by nearly four tenths.
Wow! That was a big moment for Quartararo who nearly lost the front-end at turn one.
Yellow flags ins ector two as Franco Morbidelli runs through the gravel at turn 4.
Aleix Espargaro moves himself to the top of the leaderboard by nearly four tenths from Vinales.
The first few laps are coming in as Maverick VInales leads the way for Aprilia.
MotoGP FP1 in Barcelona is underway!
Good afternoon and welcome to day-one of the Catalan MotoGP. Up first is FP1 at 09:45 UK time.