Naomi Osaka: US Open champion's career in pictures

At just 20-years-old, Naomi Osaka beat the Serena Williams to become the 2018 US Open champion. Not only was it her maiden major win, but it was also the first time a Japanese player had won one of tennis' four Grand Slams. Here is a look back at Osaka's short career to date, mapping how she came to win one of the most dramatic finals in tennis history.