Dani Pedrosa has been cleared of serious injury after a big highside while holding second place, between Jorge Lorenzo and Marc Marquez, on lap 7.
It has now been confirmed that contact from Marquez broke a rear wheel sensor and caused Pedrosa's highside. Marquez ran wide but reeled Lorenzo back in to claim his sixth win of the season and extend his title lead to 39 points with just four rounds to go.
It was Marquez's first MotoGP win in front of his home Spanish fans.
Valentino Rossi completed the podium - his first since Laguna Seca - after re-passing Alvaro Bautista with two laps to go. Bautista then became embroiled in a last-lap battle with Stefan Bradl, which allowed Rossi to escape.
Yonny Hernandez has joined Pramac in place of the injured Ben Spies with Damian Cudlin taking over from Hernandez at PBM, with Luca Scassa replacing the injured Karel Abraham at Cardion AB.
Michael Laverty has taken over the ART of ex-team-mate Hernandez, with Cudlin on the PBM bike.CLICK HERE
for pictures from the grand prix...
1. Marc Marquez
ESP Repsol Honda Team (RC213V) 42m 3.459s
2. Jorge Lorenzo
ESP Yamaha Factory Racing (YZR-M1) 42m 4.815s
3. Valentino Rossi
ITA Yamaha Factory Racing (YZR-M1) 42m 16.386s
4. Alvaro Bautista
ESP Go&Fun Honda Gresini (RC213V) 42m 17.246s
5. Stefan Bradl
GER LCR Honda MotoGP (RC213V) 42m 17.432s
6. Cal Crutchlow
GBR Monster Yamaha Tech 3 (YZR-M1) 42m 18.121s
7. Bradley Smith
GBR Monster Yamaha Tech 3 (YZR-M1) 42m 34.679s
8. Andrea Dovizioso
ITA Ducati Team (GP13) 42m 44.130s
9. Nicky Hayden
USA Ducati Team (GP13) 42m 56.872s
10. Andrea Iannone
ITA Energy T.I. Pramac Racing (GP13) 42m 58.526s
11. Aleix Espargaro
ESP Power Electronics Aspar (ART CRT) 43m 1.460s
12. Yonny Hernandez
COL Ignite Pramac Racing (GP13) 43m 8.972s
13. Randy De Puniet
FRA Power Electronics Aspar (ART CRT) 43m 10.048s
14. Hiroshi Aoyama
JPN Avintia Blusens (FTR-Kawasaki CRT)* 43m 12.133s
15. Claudio Corti
ITA NGM Forward Racing (FTR-Kawasaki CRT)* 43m 12.589s
16. Colin Edwards
USA NGM Forward Racing (FTR-Kawasaki CRT)* 43m 15.500s
17. Luca Scassa
ITA Cardion AB Motoracing (ART CRT) 43m 48.611s
18. Bryan Staring
AUS Go&Fun Honda Gresini (FTR-Honda CRT) 43m 48.687s
19. Lukas Pesek
CZE Came IodaRacing Project (Suter-BMW CRT)* 43m 49.042s DNF: Hector Barbera
ESP Avintia Blusens (FTR-Kawasaki CRT)* DNF Dani Pedrosa
ESP Repsol Honda Team (RC213V) DNF Damian Cudlin
AUS Paul Bird Motorsport (PBM-ART CRT)* DNF Danilo Petrucci
ITA Came IodaRacing Project (Suter-BMW CRT)* DNF Michael Laverty
GBR Paul Bird Motorsport (ART CRT) DNF
* Standard ECU.Be there! CLICK HERE to see ticket prices for the remaining rounds of the 2013 MotoGP World Championship from the Official MotoGP Ticket Store.