Spain - Casey Stoner of Ducati led the first practice session for the Spanish Grand Prix on Friday.
The Australian rider's lap of 1 minute, 39.731 seconds was more than one-tenth of a second faster than Yamaha rider Jorge Lorenzo, while his American teammate Nicky Hayden was nearly half a second behind in third.
Valentino Rossi of Yamaha, who won the season-opener at Qatar, was six-tenths back in sixth as the Italian braved back pain sustained in a motorcross accident in early April.
The Spanish GP is the season's second race after the Japanese GP was postponed to Oct. 3 due to air travel chaos caused by the cloud of volcanic ash two weeks ago.
Alex Debon of was fastest in the Moto2 category while Pol Espargaro of Derbi led 125cc practice
Practice Times:
MotoGP:
1. Casey Stoner (AUS/Ducati) 1:39:731
2. Jorge Lorenzo (ESP/Yamaha) at 0.144
3. Nicky Hayden (USA/Ducati) 0.417
4. Dani Pedrosa (ESP/Honda) 0.469
5. Valentino Rossi (ITA/Yamaha) 0.628
6. Loris Capirossi (ITA/Suzuki) 0.985
7. Colin Edwards (USA/Yamaha) 1.182
8. Hector Barbera (ESP/Ducati) 1.303
9. Alvaro Bautista (ESP/Suzuki) 1.362
10. Marco Melandri (ITA/Honda) 1.459
11. Ben Spies (USA/Yamaha) 1.469
12. Andrea Dovizioso (ITA/Honda) 1.546
13. Randy de Puniet (FRA/Honda) 1.562
Moto2:
1. Alex Debon (ESP/FTR) 1:44.419
2. Gabor Talmacsi (HUN/Speed Up) at 0.461
3. Kenny Noyes (USA/Promoharris) 0.501
4. Yuki Takahashi (JPN/Tech3) 0.558
5. Sergio Gadea (ESP/Pons Kalex) 0.743
125 cc:
1. Pol Espargaro (ESP/Derbi) 1:47.327
2. Marc Marquez (ESP/Derbi) at 0.121
3. Efren Vasquez (ESP/Derbi) 0.247
4. Sandros Cortese (GER/Derbi) 1.091
5. Nicolas Terol (ESP/Aprilia) 1.265