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Check out the points possibilities for the championship-deciding MAVTV 500 on Aug. 30 at Auto Club Speedway. Though he finished 10th after starting from the pole in the GoPro Grand Prix of Sonoma, Will Power holds a 51-point lead over Team Penske teammate Helio Castroneves.

The crew of the No. 14 ABC Supply A.J. Foyt Racing entry changed the Honda engine between the morning warm-up and the gridding of cars for the GoPro Grand Prix of Sonoma. Takuma Sato advanced 16 positions to finish fourth.

No damage has been reported at Sonoma Raceway, which hosts the GoPro Grand Prix of Sonoma today. Watch it live at 4 p.m. (ET) on NBCSN.

Fans can watch drivers and teams test Aug. 27 at Auto Club Speedway ahead of the MAVTV 500 on Aug. 30 under the lights. All three contenders are aiming to earn their first series title..

Ryan Hunter-Reay (shown) finished in 2nd place in this afternoon's thrilling GoPro Grand Prix of Sonoma, won by Scott Dixon

Scott Dixon wins the 85-lap GoPro Grand Prix of Sonoma on the 2.385-mile, 12-turn road course. The MAVTV 500 on Aug. 30 at Auto Club Speedway will determine the Verizon IndyCar Series driver and entrant champions. Will Power leads by 51 points.

James Hinchcliffe (shown) will start on the outside of Row 2 for today's GoPro Grand Prix of Sonoma from Sonoma Raceway, this afternoon at 4pm ET on NBCSN

Our photographers capture the on- and off-track activity at Sonoma Raceway, including the podium finishers of the GoPro Grand Prix of Sonoma lending a hand in INDYCAR CEO Mark Miles completing the ALS Ice Bucket Challenge. Check out the galleries.

The 10th Verizon IndyCar Series race at Sonoma Raceway plays a large part in the championship. Points leader Will Power starts from the pole in the 85-lap GoPro Grand Prix of Sonoma on the 2.385-mile, 12-turn road course. Watch it live at 4 p.m. (ET) on NBCSN.

Scott Dixon passed Mike Conway on Lap 83 of the 85-lap GoPro Grand Prix of Sonoma on the 2.385-mile, 12-turn road course and went on to win the 17th race of the Verizon IndyCar Series season. It was his second win at Sonoma Raceway and 35th of his career.

Will Power earns the Verizon P1 Award for the GoPro Grand Prix of Sonoma on the 2.385-mile, 12-turn road course. Watch the 85-lap race live at 4 p.m. (ET) Aug. 24 on NBCSN.

Josef Newgarden (shown) will start alongside Verizon P1 Award winner Will Power for Sunday's GoPro Grand Prix of Sonoma