Former F1 driver Felipe Massa has apologised after one of his teammates at a 500-mile go-kart race was involved in an on-track brawl with another driver on Saturday night.
The race, which took place at a kart track on the outskirts of Sao Paulo, ended in controversy when Rodrigo Dantas and Tuka Rocha were involved in an accident 18 laps from the chequered flag. Rocha, who was driving for a team led by Brazilian Stock Car driver Thiago Camilo, was running second and attempting to catch Massa for the lead when he came up behind Dantas, who was one of Massa's teammates.