Power nailed down his seventh career IZOD IndyCar Series win and became the first driver to lead from start-to-finish in an IndyCar race since Dario Franchitti's August 2009 at Sonoma, Calif.
Scott Dixon gave chase down the stretch, but ended in second place, 3.4 seconds behind the leader.
Defending IndyCar champion Franchitti came in third, while Marco Andretti and Oriol Servia rounded out the Top 5 finishers.
Defending Alabama champion Helio Castroneves ended in seventh place.
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