The racing world's rough week continued on Sunday morning when MotoGP racer Marco Simoncelli was killed after he fell off his bike and was struck by other riders in the MotoGP of Malaysia.
They performed CPR in both the ambulance and for 45 minutes in the medical centre, but were unable to save his life.
"Because of the bad crash to him during the race, he was hit by other riders, he reported a very important trauma to the head, to the neck, and to the chest," Macchiagodena reported.
"When our medical staff arrived on him he was unconscious. In the ambulance, they started CPR.
On October 16, Dan Wheldon was killed in a fiery crash at Las Vegas in the Izod IndyCar Series and off-road racer Rick Huseman perished in a plane crash on Monday.
Simoncelli, 24, finished 8th in the MotoGP points standings last year and was 6th this year. In 34 career MotoGP races, Simoncelli scored two podiums and two poles.