Kimi Antonelli became the youngest Formula One driver to take pole position for a full Grand Prix after qualifying fastest for Mercedes in China on Saturday.
The pole was the Finn's second in a row, after Brazil two weeks ago, and fourth of the campaign. Hamilton had been aiming for his 12th of the year.
Valtteri Bottas took pole position for Formula One's 70th Anniversary Grand Prix ahead of championship-leading Mercedes team mate Lewis Hamilton on Saturday.
Ferrari's Formula One world championship leader Sebastian Vettel was handed a five-second penalty for colliding with the Mercedes of Valtteri Bottas on the opening lap of the French Grand Prix on Sunday.
Finnish driver Valtteri Bottas will partner Britain's triple world champion Lewis Hamilton at dominant Mercedes, winners of the last three drivers and constructors' titles and favourites again this year.
Red Bull's Max Verstappen qualified third, after a power unit scare in the second phase sent mechanics scrambling to fix his car, with AlphaTauri's Pierre Gasly a stunning fourth on the grid.
Starting second behind pole-sitter Hamilton, Bottas got the jump on the Briton during a typically messy start at Albert Park and ended up cruising to his fourth win by some 20.80 seconds after delaying a tyre-change.
Hamilton, Bottas's team mate, started in eighth place after a grid penalty triggered by an unscheduled gearbox change and finished fourth.
Finland's Valtteri Bottas seized the first Formula One victory of his career at the Russian Grand Prix on Sunday after jumping both Ferraris at the start and then holding his nerve over the tense closing laps.
Valtteri Bottas seized his first pole position of the Formula One season in Austria on Saturday with Mercedes team mate and world championship leader Lewis Hamilton having to settle for second.
Lewis Hamilton, who started on pole position in Sochi hoping for a 91st Formula One victory to equal Ferrari great Michael Schumacher's all-time record, finished third behind Red Bull's Max Verstappen.
Valtteri Bottas announced split from wife Emilia, an Olympic swimmer
The Finn was a mere 0.006 of a second quicker than the five times world champion as the two Silver Arrows once again locked out the front row of the grid on a cloudy afternoon at Silverstone.
Formula One world champion Lewis Hamilton took pole position for the Canadian Grand Prix on Saturday with Mercedes team mate Nico Rosberg qualifying alongside him on the front row.
Valtteri Bottas knows he needs to step up his game from last season if he is to have any chance of keeping his place at Mercedes.
The Finn, advised by retired double world champion and compatriot Mika Hakkinen, spent last season learning the ropes as the team's reserve for Williams and now he is six weeks away from his race debut in Australia.
Valtteri Bottas won the Azerbaijan Grand Prix on Sunday and retook the Formula One lead from team mate Lewis Hamilton after a fourth successive one-two finish for Mercedes.
Bottas said he was already looking forward to next season despite the fact there are still two races left on the current calendar.
Finland's Valtteri Bottas took his first Formula One pole position at the Bahrain Grand Prix on Saturday with a sizzling lap that ended Mercedes team mate Lewis Hamilton's bid for a seventh in a row.
Formula One leader Valtteri Bottas put his Mercedes on pole position by a massive margin at the Spanish Grand Prix on Saturday with team mate Lewis Hamilton having to settle for second in a front row lockout.
Valtteri Bottas roared to victory in the Japanese Grand Prix on Sunday as Mercedes clinched the Formula One constructors' championship for the sixth year in a row.
Verstappen took a grid penalty at the previous race in Russia and finished second after starting at the back of the field, his progress helped after late rain caused problems for others.
Lewis Hamilton has no plans to gift any wins to Mercedes team mate Valtteri Bottas despite having a fifth Formula One championship sewn up.
The win was the third of the Finn's career and season, denying Hamilton a 10th of the campaign.
The Finn lapped the six-km Baku street circuit in one minute, 40.495 seconds, just 0.059 seconds faster than team mate and championship leader Lewis Hamilton.
Valtteri Bottas has denied signing a pre-contract with Ferrari, saying he was amused by some of the speculation about his Formula One future.
Mercedes's Valtteri Bottas snatched pole position for the US Grand Prix on Saturday, breathing life into his remote title hopes while signalling to Lewis Hamilton he will not be gifting a sixth drivers' crown to his team mate.
Valtteri Bottas ended his year-long drought with a dominant victory in Turkey on Sunday while unhappy Mercedes team mate Lewis Hamilton finished fifth and lost the Formula One championship lead to Red Bull's Max Verstappen.
Formula One's post-season shake-up took another spin on Tuesday with Williams announcing the departure of technical head Pat Symonds while Valtteri Bottas moved closer to Mercedes and Felipe Massa's retirement looked to be coming to an end.
Formula One championship leader Nico Rosberg chalked up his seventh win in a row at the Russian Grand Prix on Sunday with team mate Lewis Hamilton fighting back from 10th on the grid to seal a Mercedes one-two finish.
The front row lockout was a record-equalling 65th for champions Mercedes.
Ferrari's Sebastian Vettel qualified third, ahead of 21-year-old Monegasque team mate Charles Leclerc who was unable to repeat his Bahrain Grand Prix pole of two weeks ago.
Lewis Hamilton dominated Sunday's Hungarian Grand Prix from pole position, with a bonus point for fastest lap, to take a five point lead over Bottas, the winner of the Austrian season-opener.
Hamilton, who clinched his fourth world championship in Mexico two weeks ago, started from the pitlane after crashing in qualifying but led the race after 31 of 71 laps when others pitted.
McLaren's Australian Daniel Ricciardo will join the Dutch 23-year-old on the front row for the first time since the pair were team mates at Red Bull in 2018.
Finland's Valtteri Bottas and Brazilian Felipe Massa will stay at Williams in 2015 after the resurgent Formula One team announced on Sunday what had to be one of their easiest decisions of the season.
Kimi Raikkonen believes he still has the speed that Ferrari need despite reports that the Formula One team are lining up a replacement for 2016 in fellow-Finn Valtteri Bottas.
Six time world champion Lewis Hamilton, winner of the British Grand Prix from pole position at the same circuit last weekend and 30 points clear of Valtteri Bottas after four races without spectators, was 0.138 seconds slower.
Sebastian Vettel clocked a best lap in one minute and 40.464 seconds to outpace nearest rival and championship leader Valtteri Bottas of Mercedes by 0.272s.
The victory was a landmark 70th for the Briton, who is well on his way to a fifth title and is now 21 wins behind the all-time record of 91 held by seven times champion Michael Schumacher.
