SPEEDWAY - Long known for its ability to mess with the fortunes of drivers during its 100 years of existence, the Indianapolis Motor Speedway is now doing the same with riders.

After a major wreck with Moto GP rider Hector Barbera on Friday, one which broke three vertabrae, three more crashed in close proximity during the qualification session on the road course on Friday.

Defending Indianapolis GP champion Casey Stoner suffered torn ligaments during a spill during qualifying first. Then Americans Ben Spies and Nicky Hayden had accidents of their own, with the latter being much more serious.

Hayden, a native of nearby Owensboro, KY, was knocked unconscious after getting thrown to the ground but regained it soon after. He was taken to an area hospital for further evaluation and his status for Sunday's race is not yet known. 

Through all the chaos Dani Pedrosa came through with the quick time of 138.813 to take the pole position for the fifth running of the race. Pedrosa was the winner of the 2010 Indianapolis GP race.