World championship leader Marc Marquez was edged into second place in Friday`s practice for Sunday`s Grand Prix of Aragon where he will be looking for a record-equalling 12th win in 14 races.
The Honda star, who won the 2013 race from pole position on his way to the world title, ended the day 0.043sec behind Italy`s Andrea Dovizioso on a Ducati.
Victory on Sunday would take Marquez level with Australia`s Michael Doohan, who won 12 races in 1997, the record for most victories in one season in the sport`s elite division.
Marquez, 21, holds a commanding 74-point lead with five legs of the 2014 season remaining, although he suffered a disastrous race last time out when he came home 15th at San Marino.
The Misano race was won by Valentino Rossi on a Yamaha and the veteran Italian racer now stands in third place in the world championship on 214 points, 75 off the pace set by Marquez.
Rossi was down in 10th spot on Friday while Marquez`s Honda team-mate Dani Pedrosa, who is second in the standings, was third fastest overall.
Times in Friday`s free practice for Sunday`s Aragon Grand Prix:
1. Andrea Dovizioso (ITA/Ducati) 1min 48.285sec, 2. Marc Marquez (ESP/Honda) at 0.043sec, 3. Dani Pedrosa (ESP/Honda) 0.449, 4. Andrea Iannone (ITA/Ducati Pramac) 0.462, 5. Aleix Espargaro (ESP/Yahama Forward) 0.653, 6. Pol Espargaro (ESP/Yamaha Tech3) 0.681, 7. Jorge Lorenzo (ESP/Yamaha) 0.684, 8. Stefan Bradl (GER/Honda-LCR) 0.717, 9. Bradley Smith (GBR/Yamaha Tech3) 0.726, 10. Valentino Rossi (ITA/Yamaha) 1.027
1. Esteve Rabat (ESP/Kalex) 1min 53.838sec, 2. Johann Zarco (FRA/Caterham Suter) at 0.263sec, 3. Mika Kallio (FIN/Kalex) 0.307, 4. Franco Morbidelli (ITA/Kalex) 0.423, 5. Julian Simon (ESP/Kalex) 0.464, 6. Maverick Viñales (ESP/Kalex) 0.599, 7. Thomas Luthi (SUI/Suter) 0.609, 8. Dominique Aegerter (SUI/Suter) 0.743, 9. Jonas Folger (GER/Kalex) 0.768, 10. Ricard Cardus (ESP/Tech3) 0.920
1. Alex Rins (ESP/Honda) 1min 58.788sec, 2. Alex Marquez (ESP/Honda) at 0.018sec, 3. Niklas Ajo (FIN/Husqvarna) 0.097, 4. Juanfran Guevara (ESP/Kalex KTM) 0.144, 5. Enea Bastianini (ITA/KTM) 0.197, 6. Isaac Viñales (ITA/Calvo KTM) 0.354, 7. Miguel Oliveira (POR/Mahindra) 0.387, 8. Jakub Kornfeil (CZE/Calvo KTM) 0.391, 9. Danny Kent (GBR/Husqvarna) 0.454, 10. Jack Miller (AUS/KTM) 0.567