Rookie Alexander Rossi wins 100th running of the Indianapolis 500

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Alexander Rossi, driver of the #98 NAPA Auto Parts Andretti Herta Autosport Honda celebrates after winning the 100th running of the Indianapolis 500 at Indianapolis Motorspeedway on May 29, 2016 in Indianapolis, Indiana. (Photo by Chris Graythen/Getty Images)

INDIANAPOLIS — An American took the Andretti family to victory lane in the 100th running of the Indianapolis 500.

It just wasn’t the driver anyone expected.

Alexander Rossi was the surprising winner of “The Greatest Spectacle in Racing” when he stretched his fuel to the finish Sunday to pull off an upset victory. He ran out of gas after taking the checkered flag.

Rossi is an IndyCar rookie from California racing back in the United States after failing to put together a steady ride in Formula One. He is the ninth rookie to win the 500 and the first since Helio Castroneves in 2001.