Hamilton took back P1 from Alonso in second free practice of the Canadian GP in Montreal.
The two Mercedes were separated by 0.175 seconds and Hamilton was 0.455secs clear of Red Bull’s Sebastian Vettel in third ahead of the two Ferraris.
Kimi Raikkonen was fourth, 0.053secs quicker than Fernando Alonso who was followed by Felipe Massa and Valtteri Bottas for Williams ahead of McLaren’s Kevin Magnussen and Jenson Button.