Mercedes are 22 points ahead of Ferrari in the constructors' championship.
Russian rookie Sergey Sirotkin Williams is the best driver on the starting grid yet to score points in his career.
Haas's Romain Grosjean has yet to pick up a point in 2018 and together with the last season the Frenchman has not scored for 10 races in a row.
Hamilton has won six races in Montreal in 2007, 2010, 2012, 2015, 2016 and 2017. He is now chasing his fourth win in a row to equal Michael Schumacher's record of seven Canadian wins.
The Briton can additionally beat the record he at present shares with Schumacher of six poles in Montreal.
Fernando Alonso, Daniel Ricciardo, Kimi Raikkonen and Sebastian Vettel are all former winners in Canada. Ricciardo's first win in F1 came in Montreal in 2014. Raikkonen shares the record for fastest laps in Canada, 4 with Schumacher.
Ferrari haven't won in Montreal, a circuit named after the late Gilles Villeneuve who once raced for them, since 2004 with Schumacher.
The rain-hit Canadian Grand Prix of 2011 was Formula One's longest race, lasting 4 hours, four minutes and 39.537 seconds. The safety car became deployed six times, one other record.
The circuit is certainly difficult on brakes, with vehicles slowing from 320kph to 150 in exactly 1.6 seconds into the 'Wall of Champions' chicane.