125cc title leader Marc Marquez flattened the opposition to claim his eighth 2010 pole, from twelve attempts, by over half a second at Aragon on Saturday.

The Red Bull Ajo Derbi rider - who starts Sunday's race with a nine-point lead over Nico Terol and 20-point advantage over Pol Espargaro - set his best time on lap 13 of 15, with team-mate Sandro Cortese making it a perfect day for the Ajo team in second place, 0.563sec from Marquez.

Terol qualified third for Aspar Aprilia, with Efren Vasquez denying his Tuenti Derbi team-mate Espargaro a place on the front row. Double 2010 pole sitter Bradley Smith will start sixth on the second Aspar machine.

Qualifying - Aragon:

1. Marquez (Derbi) 1m 59.335s
2. Cortese (Derbi) +0.563s
3. Terol (Aprilia) +0.635s
4. Vazquez (Derbi) +0.930s
5. Espargaro (Derbi) +0.959s
6. Smith (Aprilia) +1.082s
7. Krummenacher (Aprilia) +1.507s
8. Zarco (Aprilia) +1.946s
9. Folger (Aprilia) +1.997s
10. Koyama (Aprilia) +2.004s

11. Webb (Aprilia) +2.479s