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Marco Andretti is the 21-year-old son of Andretti Green Racing co-owner and former driver Michael Andretti. After competing in the Star Mazda series in 2005, Marco made his IRL debut on March 26, 2006 at Homestead-Miami Speedway, becoming the youngest driver to ever compete in the series.

Andretti picked up Rookie of the Year honors in the 2006 Indianapolis 500 after finishing second to Sam Hornish Jr. with the second closest margin of victory in Indy 500 history. A win at Infineon Raceway in Sonoma, California in August of that year gave Andretti the record as the series’ youngest winner. Andretti’s sophomore season did not go as smoothly, as he failed to complete 10 out of 17 races. He will rejoin Andretti Green Racing in 2008 alongside team mates Tony Kanaan, Hideki Mutoh, and Danica Patrick.