Tennis: Naomi Osaka beats Serena Williams in the US Open women's final

Naomi Osaka became the first Japanese tennis player to win a grand slam title after she beat Serena Williams 6-2, 6-4 in the final of the US Open in New York - however, the match will be remembered for extended arguments between Williams and chair umpire Carlos Ramos, who first warned Williams for receiving coaching, penalised her a point for smashing a racquet and then a game in the second set for verbal abuse.