US Open champion looking tough to stop again.
Here is our pictorial from day nine.
Rafael Nadal already looking ahead to semis.
Czech in no mood to party.
Are we seeing the sparks of a legendary rivalry?
What next for Greek sensation?
A week is a long time in tennis...
Unseeded American marches on.
Stefanos Tsitsipas is into his maiden Grand Slam semi-final.
Patrick Mouratoglou says Serena Williams is in top shape.