Alonso had a slight contact with Vettel going into turn 2 enough to damage his front wing.
Dewanto also hit the B-26, damaging its starboard wing and the bomber caught fire.
The collision damaged Rosberg's front wing, and he was forced to make a pit-stop to change it.
He crashed into a tree and died, which severely damaged his wing and has to suffer the pain.
During the session, Schumacher went off the track at the exit of turn five, damaging his car's front wing in the process.
Barrichello hit a wall, which damaged his car's rear wing and caused him to retire from the race.
He damaged his front wing in the process and returned to the track in fourth.
Piquet crashed on lap 28 and damaged his front wing but was able to continue.
He claimed after the race that a beaver had damaged his front wing although Canadian reports said it more likely to have been a groundhog.
Andretti had hit Fabi from behind and damaged his front wing.