It was the night until today, local time, that the accident occurred in Dallas, USA. 29-year-old Errol Spence Jr should have been thrown out of the car after crashing at high speed, without a seatbelt, local media reports.
Pictures from the accident scene show how the car was demolished and Spence Jr's condition is described as serious but not life threatening.
Errol Spence Jr currently holds the world champion belts in welterweight in both IBF and WBC. The American is unbeaten in his career with 26 wins, 21 of which are knockout.