Marco Andretti Tops Indy Practice

Marco Andretti posted the fastest lap in first day practice for the Indianapolis 500 on Thursday. He covered the 2.5-mile oval in 39.9152 seconds, giving a lap average of 225.478 mph.

Second-quick was Helio Castroneves (225.237 mph), followed by Ryan Briscoe (224.904 mph), defending race winner Scott Dixon (224.448 mph), and Dario Franchitti (224.160 mph).

Thirty-two drivers turned in a combined 2,199 practice laps.

The Speedway is open for practice again Friday before Saturday's Pole Day Qualifying. Scott Dixon won the pole in 2008.