Maverick Viñales led MotoGP World Championship practice Saturday morning at Circuit de Barcelona-Catalunya, in Spain. Riding his Aprilia RS-GP on spec Michelin tires, the Spaniard turned a lap time of 1:40.208 to lead the field of 23 riders.

Franco Morbidelli was the best of the rest with a 1:40.316 on his Prima Pramac Racing Ducati Desmosedici. 

Alex Marquez was third at 1:40.336 on his Gresini Racing Ducati.