Hamilton is concerned that doing this race with an old engine that will have lost a small amount of power over its life could be enough to make it hard to contend for victory at a track where he has won six times in 10 races.
Vettel said he was surprised by Red Bull's decision to start on the pink-marked tyre, a compound they managed to make work successfully relative to their rivals in Monaco, but Verstappen insisted his team had a good reason to do so.
"We had a few problems".
Daniel Ricciardo hopes Red Bull's contrary choice of starting on Pirelli's hypersoft tyre will provide the team with an edge at the start of Sunday's Canadian Grand Prix. "But also Max was driving really well all weekend, so I won't take that away from him". Ricciardo is third in the standings, 38 points behind Hamilton, and Bottas is another four points back, in fourth.
Robert De Niro's F-comment on Trump shocks fans
De Niro's negative opinions about Trump are nothing new. "The offensive language was deleted from the broadcast". Greg Gutfeld reacted to several recent profane criticisms of President Trump by actor Robert De Niro .
"Now he (Verstappen) is in the spotlight. any small error now I think he's probably going to get a little picked apart from", Ricciardo said.
"It's a positive start to the weekend", the Dutchman said.
From the start, Verstappen nearly got the jump on Bottas, but the Finn held his line around the outside of Turn 1 to take the inside line into the next corner, keeping hold of second spot. Kimi Raikkonen was second fastest for Ferrari but the competitive picture was skewed by Mercedes opting against using Pirelli's fastest compound - the hyper-soft - on either vehicle across both practice sessions.
Asked whether his Friday clean sweep meant pole position could be on the cards, Verstappen replied: "In terms of pole position, I think Mercedes will be very strong again".
But after the dreary spectacle in Monaco a fortnight ago, at least we can rely on one of the finest overtakers in the sport fighting his way back through the field to provide the entertainment this weekend. "With what we had, I feel I did a not bad job". So qualifying we actually made really good progress. The 36-year-old Spaniard fears the high-powered Montreal track will work against his McLaren vehicle.
Asked about his driving style after arriving in Montreal, he said, "I get really exhausted of all the questions". The main thing was to get through the program, which we did. His best lap was the slowest in the field at 1:17.145, but he was there just to get the feel of an F1 auto and help the team test it on two types of tires. "We knew - or we thought - Mercedes were going to qualify on the ultra, so yeah, we'll see tomorrow".