The final phase of qualifying was halted, with only Piastri and Haas' Nico Hulkenberg having set times, when Sainz slammed backwards into the barriers at the final corner as he prepared to start his flying lap.
Red Bull's Max Verstappen dealt Lando Norris a shattering blow in their Formula One title battle by winning a wet and chaotic Sao Paulo Grand Prix from 17th on the grid.
Triple Formula One world champion Verstappen missed out on pole because he set his time of one minute 12.000 seconds after his British rival in a drama-filled qualifying session at the Circuit Gilles Villeneuve.
McLaren's Lando Norris hailed the best qualifying lap of his career after beating F1 leader Max Verstappen to pole position at the US Grand Prix.
A summary of sports events and persons who made news on Wednesday
Ferrari's Carlos Sainz won the Singapore Grand Prix on Sunday to end Formula One leader Max Verstappen's record run of 10 wins in a row.
Mexican team mate Sergio Perez qualified second fastest in a front row lockout for Red Bull, 15 years after the team took their first win at the Shanghai International Circuit with Sebastian Vettel.
Max Verstappen put Red Bull on pole position for the Canadian Grand Prix with Alpine's Fernando Alonso leaping onto the front row alongside the Formula One championship leader in a wet qualifying on Saturday.
Mercedes driver George Russell has been disqualified and lost his Belgium Grand Prix win on Sunday, after his car was found to be underweight, and his teammate Lewis Hamilton was promoted to first place.
Hamilton won Formula Three and GP2 (now Formula Two) championships with Vasseur's ART team in 2005 and 2006 before making a spectacular Formula One debut with McLaren in 2007.
Formula One world champion Max Verstappen took pole position for a third straight year at the Japanese Grand Prix on Saturday, with Sergio Perez qualifying a close second to ensure a Red Bull front-row lockout.
Red Bull's Formula One World champion Max Verstappen took pole position for the Australian Grand Prix on Saturday with Carlos Sainz qualifying alongside on the front row for Ferrari two weeks after undergoing surgery for appendicitis.
Red Bull's triple world champion Max Verstappen followed up a Saturday sprint win with a statement pole position for Sunday's Austrian Grand Prix, with McLaren's Lando Norris again alongside on the front row.
George Russell led Lewis Hamilton in a Mercedes front-row lockout in qualifying for the British Grand Prix on Saturday with McLaren's Lando Norris completing a rare one-two-three of home drivers.
Max Verstappen took full advantage of an engine failure for Ferrari's Charles Leclerc to win the Azerbaijan Formula One Grand Prix.
Max Verstappen became the first Formula One driver to take 16 victories in a season
Four times Formula One champion Sebastian Vettel recognised he is sailing through a 'rough sea' but said on Thursday there had been no talks with Ferrari about parting ways before the end of the season.
Formula One drivers expressed shock after the sport's governing body quadrupled the amount stewards can fine them to a maximum of one million euros ($1.06 million).
Red Bull's Verstappen, who had been on pole at Zandvoort every year since the circuit returned in 2021 and has yet to be beaten there, will still line up alongside the Briton on the front row.
Sebastian Vettel believes the back-to-back races in Austria at the start of the Formula One season will be decided on slim margins and his Ferrari team will need to fine-tune their racing strategy to remain competitive over two weeks. Four-times World champion Vettel and team mate Charles Leclerc hit the track in Ferrari's 2018 car, the SF71-H, earlier this week in a test at Mugello as the Scuderia stepped up their preparations for the 2020 campaign.
Ferrari announced a restructuring of their Formula One technical department on Wednesday after struggling in the first three races of a season so far dominated by Mercedes. The sport's oldest, most glamorous and successful team -- last year's runners-up -- are fifth in the championship with Sebastian Vettel and Charles Leclerc pushed into more of a midfield battle.
A teary George Russell celebrated the first Formula One Grand Prix victory of his career in Brazil on Sunday in a one-two finish with Mercedes team mate and seven-times world champion Lewis Hamilton.
Max Verstappen leads Red Bull front row sweep in Bahrain
Max Verstappen signed off on a dominant 2022 Formula One campaign with a record-extending 15th win of the year
Images from the Russian F1 Grand Prix in Sochi on Sunday
Red Bull are concerned about their constructors' title defence being weakened at a time when McLaren are emerging as a threat
Ferrari, whose race on Sunday lasted about 20 seconds until Sebastian Vettel and Charles Leclerc collided, said the team strongly supported diversity and equal opportunities.
Sergio Perez stormed to a stunning maiden pole position under the floodlights in a crash-interrupted qualifying session on Saturday
Red Bull's Max Verstappen sang "Viva Las Vegas" after racing to a record-extending 18th victory of the season and joining Sebastian Vettel in third place on Formula One's all-time winners' list.
Carlos Sainz lapped Monza's "Temple of Speed" with a fastest time of one minute 20.294 seconds, 0.013 quicker than Max Verstappen's final flying lap.
Ferrari's times were eye-catching, and quicker than anything from last year's weather-affected first four-day test at the Circuit de Catalunya.
The writing has been on the wall for Sebastian Vettel since September 2018 when Ferrari announced Charles Leclerc as his Formula One team mate. The German, who will leave the Italian team at the end of a pandemic-hit 2020 season that has yet to start, was top dog at Maranello at the time but Leclerc was young, hungry and determined.
A glaring error by Ferrari denied Charles Leclerc the chance to shine at home, with the 21-year-old failing to make it through the first phase and qualifying only 16th after going fastest in final practice.
Sergio Perez beat teammate and championship leader Max Verstappen to win the Azerbaijan Grand Prix on Sunday and continue Red Bull's Formula One domination with a double success in Baku.
Ferrari Formula One boss Mattia Binotto has handed in his resignation and will leave at the end of the year, the championship runners-up said on Tuesday.
Lewis Hamilton is on course for his most successful campaign yet and can become only the third driver after Michael Schumacher and Sebastian Vettel to win 13 times in a season.
Ferrari's Charles Leclerc qualified fourth with Mexican Sergio Perez, Verstappen's closest title rival and team mate but a massive 151 points adrift after 15 of 22 rounds, fifth and 0.773 off his team mate's pace.
Verstappen suffered two retirements from the first three races but has otherwise finished all but two rounds in the top three.
It was the first time Verstappen, winner of a record 19 of 22 races last year, has won the first two races of a season. He has also won 19 of the last 20.
Max Verstappen celebrated a record 10th win in a row by leading Red Bull team mate Sergio Perez one-two at Ferrari's home Italian Grand Prix