Pole-sitter Will Power held off a furious charge from teammate Helio Castroneves over the final seven laps following a late restart to become the first two-time winner at the Indy Grand Prix of Sonoma with a dominating performance Sunday in Sonoma, Calif.

Power led 71 of the 75 laps to earn his fifth victory of the year, one shy of the IndyCar single-season record. It's also Power's second straight win at Infineon Speedway, the same track where his career almost ended in 2009 following a horrific crash.

That inched the Australian closer to points leader Dario Franchitti. Power trails Franchitti by 26 points with four races to go.

"I said before the race that if we could finish how we started, it would be a perfect weekend," said Power, who became the first two-time winner of this event. "Now we have a legitimate shot at the championship. Two more road courses, two more ovals and we can get this."

Castroneves was second followed by Ryan Briscoe, completing a 1-2-3 sweep for Team Penske. Franchitti placed fourth followed by Target Chip Ganassi Racing teammate Scott Dixon.

Indy Grand Prix of Sonoma

Sunday

At Infineon Raceway

Sonoma, Calif.

Lap length: 2.303 miles

(Starting position in parentheses)

1. (1) Will Power, Dallara-Honda, 75, Running.

2. (2) Helio Castroneves, Dallara-Honda, 75, Running.

3. (3) Ryan Briscoe, Dallara-Honda, 75, Running.

4. (4) Dario Franchitti, Dallara-Honda, 75, Running.

5. (5) Scott Dixon, Dallara-Honda, 75, Running.

6. (8) Sebastien Bourdais, Dallara-Honda, 75, Running.

7. (6) James Hinchcliffe, Dallara-Honda, 75, Running.

8. (13) Graham Rahal, Dallara-Honda, 75, Running.

9. (9) E.J. Viso, Dallara-Honda, 75, Running.

10. (19) Ryan Hunter-Reay, Dallara-Honda, 75, Running.

11. (18) Oriol Servia, Dallara-Honda, 75, Running.

12. (15) Martin Plowman, Dallara-Honda, 75, Running.

13. (10) Ana Beatriz, Dallara-Honda, 75, Running.

14. (23) Sebastian Saavedra, Dallara-Honda, 75, Running.

15. (22) Simon Pagenaud, Dallara-Honda, 75, Running.

16. (7) Mike Conway, Dallara-Honda, 75, Running.

17. (11) Giorgio Pantano, Dallara-Honda, 75, Running.

18. (16) Takuma Sato, Dallara-Honda, 74, Running.

19. (17) James Jakes, Dallara-Honda, 74, Running.

20. (12) Alex Tagliani, Dallara-Honda, 74, Running.

21. (25) Danica Patrick, Dallara-Honda, 74, Running.

22. (28) Vitor Meira, Dallara-Honda, 74, Running.

23. (20) J.R. Hildebrand, Dallara-Honda, 74, Running.

24. (14) Marco Andretti, Dallara-Honda, 74, Running.

25. (27) Ed Carpenter, Dallara-Honda, 74, Running.

26. (26) Charlie Kimball, Dallara-Honda, 66, Running.

27. (24) Ho-Pin Tung, Dallara-Honda, 63, Contact.

28. (21) Tony Kanaan, Dallara-Honda, 38, Mechanical.

Points: Franchitti 475, Power 449, Dixon 400, Servia 327, Briscoe 312, Kanaan 305, M.Andretti 282, Hunter-Reay 281, Castroneves 277, Rahal 264.

• FORMULA ONE

Defending Formula One champion Sebastian Vettel won the Belgian Grand Prix in Spa, Belgium, to strengthen his overall lead with seven races remaining.

Vettel started from pole position to win his seventh race of the season and 17th of his career. The German led Red Bull to a 1-2 finish, with Mark Webber finishing close behind.

Belgian Grand Prix

Sunday

At Circuit de Spa-Francorchamps

Spa-Francorchamps, Belgium

Lap length: 4.35 miles

1. Sebastian Vettel, Germany, Red Bull, 44 laps, 1:26:44.893, 132.393 mph.

2. Mark Webber, Australia, Red Bull, 44, 1:26:48.634.

3. Jenson Button, England, McLaren, 44, 1:26:54.562.

4. Fernando Alonso, Spain, Ferrari, 44, 1:26:57.915.

5. Michael Schumacher, Germany, Mercedes, 44, 1:27:32.357.

6. Nico Rosberg, Germany, Mercedes, 44, 1:27:33.567.

7. Adrian Sutil, Germany, Force India, 44, 1:27:44.606.

8. Felipe Massa, Brazil, Ferrari, 44, 1:27:50.969.

9. Vitaly Petrov, Russia, Renault, 44, 1:27:56.810.

10. Pastor Maldonado, Venezuela, Williams, 44, 1:28:02.508.

11. Paul di Resta, Scotland, Force India, 44, 1:28:08.887.

12. Kamui Kobayashi, Japan, Sauber, 44, 1:28:16.869.

13. Bruno Senna, Brazil, Renault, 44, 1:28:17.878.

14. Jarno Trulli, Italy, Team Lotus, 43, +1 lap.

15. Heikki Kovalainen, Finland, Team Lotus, 43, +1 lap.

16. Rubens Barrichello, Brazil, Williams, 43, +1 lap.

17. Jerome d'Ambrosio, Belgium, Virgin, 43, +1 lap.

18. Timo Glock, Germany, Virgin, 43, +1 lap.

19. Vitantonio Liuzzi, Italy, HRT, 43, +1 lap.

Not Classfied

20. Sergio Perez, Mexico, Sauber, 27, Retired.

21. Daniel Ricciardo, Australia, HRT, 13, Retired.

22. Lewis Hamilton, England, McLaren, 12, Retired.

23. Sebastien Buemi, Switzerland, Toro Rosso, 6, Retired.

24. Jaime Alguersuari, Spain, Toro Rosso, 0, Retired.

Drivers Standings

(After 12 of 20 races)

1. Sebastian Vettel, Germany, Red Bull, 259 points.

2. Mark Webber, Australia, Red Bull, 167.

3. Fernando Alonso, Spain, Ferrari, 157.

4. Jenson Button, England, McLaren, 149.

5. Lewis Hamilton, England, McLaren, 146.