Marco Andretti backed up his dramatic run for the pole position with the fastest lap during Sunday afternoon's practice period at the Indianapolis Motor Speedway. Despite not getting out until late in the two-and-half hour session, Andretti made the most of his 26 laps by turning a best of 224.122mph in the U.S. Concrete Honda. And that was just fast enough to unseat Helio Castroneves. After a very humbling qualifying run that sees him line up 28th for the 104th Indianapolis 500, the three-time Indy 500 winner came up with a 224.067mph lap in the Pennzoil Chevy.
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