Karolína Plíšková fought back to overcome Serena Williams in the quarter-finals ©Getty Images

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Serena Williams led 5-1 in the deciding set against Karolína Plíšková ©Getty Images
Serena Williams led 5-1 in the deciding set against Karolína Plíšková ©Getty Images
The 37-year-old American bid farewell to her pursuit of a record-equalling 24th Grand Slam title ©Getty Images
The 37-year-old American bid farewell to her pursuit of a record-equalling 24th Grand Slam title ©Getty Images
There were jubilant scenes among Karolína Plíšková's coaching team after he sealed a comeback victory ©Getty Images
There were jubilant scenes among Karolína Plíšková's coaching team after he sealed a comeback victory ©Getty Images
Naomi Osaka of Japan will take on the Czech player in the semi-finals after she beat Elina Svitolina of Ukraine ©Getty Images
Naomi Osaka of Japan will take on the Czech player in the semi-finals after she beat Elina Svitolina of Ukraine ©Getty Images
The reigning US Open champion was in formidable form as she dispatched her opponent in straight sets ©Getty Images
The reigning US Open champion was in formidable form as she dispatched her opponent in straight sets ©Getty Images
Novak Djokovic booked his place in the semi-finals after Kei Nishikori was forced to retire ©Getty Images
Novak Djokovic booked his place in the semi-finals after Kei Nishikori was forced to retire ©Getty Images
The six-time Australian Open champion led 6-1, 4-1 when his Japanese opponent retired hurt ©Getty Images
The six-time Australian Open champion led 6-1, 4-1 when his Japanese opponent retired hurt ©Getty Images
Frenchman Lucas Pouille ousted Canadian Milos Raonic to progress to the semi-finals of a Grand Slam for the first time ©Getty Images
Frenchman Lucas Pouille ousted Canadian Milos Raonic to progress to the semi-finals of a Grand Slam for the first time ©Getty Images
Lucas Pouille proved too strong for the Canadian and will face Djokovic in the last four ©Getty Images
Lucas Pouille proved too strong for the Canadian and will face Djokovic in the last four ©Getty Images