LAS VEGAS - McLaren's Lando Norris said he was probably not ready to challenge Max Verstappen for the Formula One title this season and accepted that his hopes were effectively over after a demoralising defeat in Brazil earlier this month.

The Briton told reporters on Wednesday ahead of the Las Vegas Grand Prix that the race at Sao Paulo's Interlagos circuit had been a bitter blow. Norris started on pole but finished sixth while Red Bull's Verstappen went from 17th to first.