Oleksandr Usyk has questioned Daniel Dubois’ “brains” in the build-up to Saturday’s undisputed world heavyweight bout at Wembley.
Dubois cut a more relaxed figure during a drama-free open workout on Wednesday and Thursday’s press conference, but previously the 27-year-old from London and his team had seemed eager to get under the skin of the WBA, WBO and WBC champion.
