McLaren’s title contenders Lando Norris and Oscar Piastri struggled in first apply on the Las Vegas Grand Prix as Ferrari’s Charles Leclerc set the tempo.
Norris and Piastri ended the session on a dusty observe in sixth and eighth locations after a collection of off-track moments.
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Norris was 0.456 seconds slower than Leclerc, who headed Williams’ Alex Albon by 0.166secs.
Pink Bull’s Yuki Tsunoda was third, forward of team-mate Max Verstappen for the primary time since they’ve been team-mates this yr.
Williams’ Carlos Sainz was fifth, whereas Racing Bulls’ Isack Hadjar took seventh along with his closing lap of the session. Mercedes’ George Russell was ninth, forward of team-mate Kimi Antonelli and Ferrari’s Lewis Hamilton.
Norris took to the escape street at Flip 14 on the finish of Las Vegas’ well-known Strip twice on consecutive laps as he fought to search out tempo in his McLaren.
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He additionally hit the wall early within the session, though he escaped with out damaging the automobile.
Piastri, 24 factors behind the Briton on the head of the championship, had his off-track second at Turns Eight and 9 across the Sphere.
The Australian was 0.192secs slower than Norris, persevering with the efficiency pattern between the 2 in most up-to-date races.
Norris has gained 58 factors on Piastri previously six races, to take management of the season and put himself inside sniffing distance of the championship.
Leclerc was fast all session, however Hamilton ended up 0.759secs behind his team-mate.
The session is unlikely to be consultant of the remainder of the weekend because the observe is so soiled and can enhance because the classes tick by.
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Second apply is at 04:00 GMT.
