Mahesh Bhupathi and Daniela Hantuchova take control in the mixed doubles final against Katarina Srebotnik and Nenad Zimonjic

Srebotnik and Zimonjic go down 6-4 6-2 to Bhupathi and Hantuchova

Third seed Lleyton Hewitt makes a poor start to his quarter-final against Jarkko Nieminen

Hewitt's sister Jaslyn and wife Bec Cartwright look worried as their man falls two sets to one behind

But Nieminen cannot maintain the pressure and drops serve early in the fourth and fifth sets

A pumped up Hewitt gets his act together in the fifth to seal a 2-6 6-1 3-6 6-3 6-1 win

Roger Federer makes a good start against David Nalbandian in the last of the men's quarter-finals

Nalbandian cannot take advantage of early breaks in the first two sets

Federer grits his teeth and finds his best form as he sweeps through the third set

The end is not long in coming as Federer reaches the US Open semi-finals for the second straight year