Juan Martin del Potro makes change to coaching set-up.
Rafa gives tip to the pretenders.
A lovely message from Juan Martin del Potro.
Tennis Today is on the bizarre side today.
Tennis Today features Federer, Nadal, Del Potro.
New nightmare for Delpo.
Argentine still working his way back.
What's going on in tennis today?
Argentinian's season is over.
Juan Martin del Potro back on the tennis court.