Doornbos fastest in early Thursday Indy practice

Rookie driver Robert Doornbos was the fastest during early Thursday practice for the Indianapolis 500. Practice began about 20 minutes after its scheduled start because of a still-wet track, but by midday Doornbos was at more than 223 mph, just ahead of Penske teammates Ryan Briscoe and two-time Indy winner Helio Castroneves. Defending champion Scott Dixon and his Ganassi Racing teammate Dario Franchitti were right behind at more than 222.