Scott Sharp will race for the Rahal Letterman team in the IRL IndyCar Series in 2007. Sharp, a nine-time winner in the IndyCar Series, raced for Delphi Fernandez Racing in 2006. He was joint champion in the IRL’s debut season in 1996.“I’m so fortunate to have this opportunity with those guys. I couldn’t be more excited right now,” said Sharp, who has started the last 121 IndyCar races....