Ferrari's Formula One championship leader Fernando Alonso and McLaren's Lewis Hamilton crashed out of the Belgian Grand Prix at the start today. At Spa Francorchamps, the safety car was deployed immediately after the collision into the first corner that also led to the retirements of Sauber's Mexican Sergio Perez and Lotus'sFrench driver Romain Grosjean. Television replays indicated that Grosjean, whose car flew through the air over the nose of the Ferrari which also lifted off the ground, had triggered the crash by cutting across into Hamilton who had nowhere to go. Debris from the cars littered the track.