 Cup regular Keselowski took the lead and held off teammate Sam Hornish Jr. to give owner Roger Penske his first stock car win at Indy.At the second race in Iowa, polesitter Elliott Sadler rebounded from the disappointment at Indy and held off Justin Allgaier to grab his fourth win of the season.Heading up north to Watkins Glen, Keselowski dominated the race, but Carl Edwards, making a one-off appearance, passed Keselowski with 10 to go and held on for his first win of the season.