The Ducati rider scored the best time of 1:39.739 early in the first practice, at only his 4th timed lap at Jerez. That put him more than half of second ahead of all the other riders until the late stages of P1, when he unfortunately experienced a crash in the Angel Nieto corner.
He lost the front end of his Ducati in the aforementioned section of the circuit and had to call it a day only minutes before the one-hour mark, but fortunately escaped unhurt from the crash. In the late stages of the session, Yamaha's Jorge Lorenzo threatened Stoner's leading position, but only managed to come 0.144 seconds behind the Australian in the end.
Ducati's Nicky Hayden piggybacked on his impressive performance in Qatar and recorded a 3rd fastest time on Friday, more than 4 tenths of a second behind, while followed by Dani Pedrosa and Valentino Rossi.
The Italian champion did not get out of his garage too often this afternoon, as he tried to protect his damaged shoulder. Suzuki's Loris Capirossi was the 6th and final driver to be within one second behind Stoner, while followed by Tech 3's Colin Edwards, Aspar's Hector Barbera, Suzuki's Alvaro Bautista and Gresini's Marco Melandri.
Here's how the P1 classification looked like this afternoon:
01. Casey Stoner (Ducati) 1:39.731
02. Jorge Lorenzo (Yamaha) 1:39.875
03. Nicky Hayden (Ducati) 1:40.148
04. Dani Pedrosa (Honda) 1:40.200
05. Valentino Rossi (Yamaha) 1:40.359
06. Loris Capirossi (Suzuki) 1:40.716
07. Colin Edwards (Tech 3 Yamaha) 1:40.913
08. Hector Barbera (Aspar Ducati) 1:41.034
09. Alvaro Bautista (Suzuki) 1:41.093
10. Marco Melandri (Gresini Honda) 1:41.190
11. Ben Spies (Tech 3 Yamaha) 1:41.200
12. Andrea Dovizioso (Honda) 1:41.277
13. Randy de Puniet (LCR Honda) 1:41.293
14. Mika Kallio Pramac (Ducati) 1:41.297
15. Marco Simoncelli (Gresini Honda) 1:41.533
16. Aleix Espargaro (Pramac Ducati) 1:41.742
17. Hiroshi Aoyama (Interwetten Honda) 1:41.837