Castroneves' girlfriend, Adriana Henao, gave birth to the couple's first child, Mikaella Castroneves, on Monday afternoon in Atlanta. The baby girl measured 19 inches and weighed 7 pounds, 3 ounces.
In a statement released by Penske Racing, Castroneves says his girlfriend and child were doing well and the baby already has him running around "like crazy."
The Brazilian became the first foreigner to win Indy three times in May. He was fourth in points in 2009 despite missing the season's first race while fighting tax evasion charges. Castroneves was acquitted of all but one charge in April, and that was later dropped.