RACE: 98th Indianapolis 500

DATE: May 25, 2014

WINNER: Ryan Hunter-Reay

AVERAGE SPEED: 186.563 mph

WHAT HAPPENED: Trying once again to join the exclusive club of four-time winners, Helio Castroneves pushed Hunter-Reay hard in the final laps. The first American to win the Indy 500 since Sam Hornish Jr. in 2006 held off Castroneves by 0.600 seconds, the second-closest finish in race history.

NOTABLE: The month began with the inaugural Grand Prix of Indianapolis on the road course, which was won by Simon Pagenaud. Ed Carpenter won his second straight pole, but it was Kurt Busch who made headlines in his bid to run the Indy 500 and Coca-Cola 600 on the same day. Busch finished sixth in the Indy 500 but could not finish the NASCAR race because of a blown engine that night in Charlotte. Jim Nabors sang "Back Home Again in Indiana" for the 35th and final time.