Helio Castronevas beat Kiwi Scott Dixon by just over half a second at the inaugural event, after coming off caution with two laps to go
It was a two-man chase between Castroneves and Dixon at the end, with the rest of the field at least 7 seconds behind. Castroneves didn't offer any opening for Dixon to get by him on the narrow track that offers few easy spots to pass and makes fuel strategy important.
Dario Franchitti came in third, followed by Will Power, who was dominant in qualifying and practice. Power hangs onto his points lead after victory in the first two races. Castroneves made a 50-point jump to move into second place, ahead of Franchitti, Justin Wilson and Dixon.
Power pitted first while Castroneves waited. His patience paid off late as well.
"The only way to stop Power was trying to do something different," he said. "Today was an opportunity to do that, and it worked out perfectly."
Added Dixon: "We were of the notion that whatever Will was going to do, we were going to do the opposite."
The race marked the first time since Indy Racing League was formed in 1996 that every driver who started the race was still running at the finish.