Dixon passed Dario Franchitti and Dan Wheldon on lap 95 and ran away with the Firestone Indy 200 on Sunday for his second straight IndyCar victory. He also became the first driver to repeat at the Nashville Superspeedway.

"That's two weeks in a row, and definitely what we need for the championship," Dixon said.

Dixon's victory at Watkins Glen last week was overshadowed by the fight involving Tony Kanaan and Sam Hornish Jr., but he had no such problems Sunday when not even a caution for a light sprinkle or a restart with five laps left could eat into his lead.

Franchitti was second, and Danica Patrick tied her career-best finish of third earlier this year at Texas. Sam Hornish Jr. was fourth followed by Marco Andretti.

The race was postponed from Saturday night until Sunday, the first IndyCar Series' race delayed a day by rain since June 2000 at Texas Motor Speedway.

Dixon started on the pole and watched Franchitti pass him on the opening lap for the lead, which he held for 88 laps. Wheldon also led a few laps.

But Dixon took back the lead and grabbed hold of the race with an impressive pass. Franchitti and Wheldon both were slowed by traffic, and Dixon dipped to the inside, passing both on the left for the lead.

Dixon, who came in trailing Franchitti by 47 points for the series points lead, pitted for the last time on lap 154. He retook the lead as he came back out of the pits on lap 159 and didn't let the lead slip away again.

Kanaan's race came to a much quieter finish than at Watkins Glen.