Hartley crashed out early at the Circuit Gilles Villeneuve after an opening lap collision.
Max Verstappen, who was quickest in all three pre-qualifying practice sessions, placed third and will start in the second row next to Hamilton, whose run of three straight Canadian poles ended. We all know we're on lap 69, but to someone who is a slightly more casual observer, they might think "oh, this must mean it's the last lap".
"I'm just so happy because all of a sudden at the start I was down on power". It was his second Canadian GP win after 2013, when he drove for Red Bull Renault.
Lance Stroll of Montreal, the first Canadian to race in F1 since Jacques Villeneuve left in 2006, qualified 17th as his Williams team's struggles continued. Forty years after Gilles won his Grand Prix here, I think it's great to show that Ferrari's still alive, winning races.
Mercedes were never in the victory equation, having not got engine updates ready in time for the race while Ferrari and Red Bull both had new parts.
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Hamilton, who had a hard weekend, was unable to find the performance he wanted. Mercedes, Ferrari and Red Bull have dominated the field this season.
Australian Daniel Ricciardo was fourth for Red Bull, and denied the fastest lap by the early flag waving which meant that did not count. "But it showed in Monaco that we have a great vehicle".
"With the long straights it's hard to fight for pole position". I still think we are not pretty good in Monaco and Singapore, but that's maybe the odd outlier.
After falling behind Ricciardo during those stops, Hamilton was then vulnerable to Kimi Raikkonen's Ferrari also getting ahead of him when the Finn stopped much later in the race, but he hung on to fifth place as Raikkonen emerged from the pits just behind him at Turn 2.
"The team has been extremely strong in the past at keeping reliability on a high level so that is not a part that worries me, it is more we have seen today a Ferrari that is the stronger auto - strong in qualifying, strong in race and at no time we had a chance to fight for the win".
Vettel had no such trouble, leaving the jostling behind him as he steered through the 4.36-kilometer track named for the Ferrari driver and Montreal native who earned his first Formula One victory here 40 years ago.
"We got pole today for a reason", said Vettel.