George Russell must find 'overdrive' in 2027 or it's 'game over' after seeing Kimi Antonelli become F1 world champion, says Martin Brundle

George Russell would have been broken to see his Mercedes team-mate Kimi Antonelli become world champion, according to Sky Sports F1s Martin Brundle; watch Fridays practice sessions for the Sao Paulo Grand Prix from 3.30pm and 7pm, live on Sky Sports F1