|AP Photo/Jens Meyer
Championship leader Marc Marquez had the fastest lap in the first two practices for the Czech Grand Prix on Friday.
The Spaniard covered the Brno circuit in 1 minute, 55.840 seconds on his Honda.
Italian Andrea Iannone, who won his maiden MotoGP race at the Austrian GP on Sunday riding a Ducati, finished second, 0.104 seconds behind, while defending MotoGP champion Jorge Lorenzo on a Yamaha was third, 0.137 back.
After 10 of 18 races, Marquez leads with 181 points, 43 clear of Lorenzo with another Yamaha rider, Valentino Rossi, 14 points further back in third.
Qualifying is scheduled for Saturday and the race is on Sunday.