The overall leader board stays the same after the Montreal Grand Prix:

Big changes in the league standings after Race 5 with Phil's Team Rocket jumping into the lead

Upsets on the track and upsets in the league - 

The standings after three races:

Just prior to recording this week we were talking about the amount of abuse an F1 car takes when there's a long string of flyaway races like at the start of the season.  From what we can see on television the cars still look pristine and fresh after every race weekend no matter where they are in the world.

But the truth is much different as you can see below in this picture from McLaren taken after this weekend's race in China..