McLaren's Lando Norris dominated the Singapore Grand Prix from start to finish on Sunday to take another chunk out of Max Verstappen's Formula One championship lead.
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 Sebastian Vettel secured the team's 14th pole position in as many races this season when the German world champion led Saturday's qualifying for the Singapore Grand Prix.
Mark Webber kept Red Bull on course for a 14th pole position in as many races this season, when he lapped fastest in final free practice for the Singapore Grand Prix on Saturday.
Fernando Alonso improved his chances of claiming a third Formula One world title by storming to pole position for the Singapore Grand Prix on Saturday.
The Marina Bay circuit, home to the Singapore Grand Prix, will undergo key changes to increase overtaking opportunities following criticism by teams at last year's inaugural Formula One race. Minor adjustments will be made to three turns and surface improvements undertaken at three other locations on the track, organisers said on Wednesday. Revisions will also be made to pit lane entry as well as one runoff area.
Force India driver Adrian Sutil will start 16th, one spot ahead of his teammate Vitantonio Liuzzi when the Singapore Grand Prix Formula One race gets underway at Marina Bay circuit in Singapore on Sunday.
The Singapore Formula One Grand Prix has been cancelled for the second year in a row due to the COVID-19 pandemic.
Since its inaugural race in 2008 the Singapore Grand Prix has gained a reputation for being the toughest challenge in Formula One, providing drivers with an extreme test of endurance in the trickiest conditions.