"Being a tennis commentator you've got to stay neutral, but I'm a big Roger Federer fan," the German legend tells CNN-IBN.
The Wanderers Stadium, Johannesburg ,12/18/2013, 14:00 (IST)
W.A.C.A. Ground, Perth ,12/13/2013, 08:00 (IST)
Sharjah Cricket Association Stadium, Sharjah ,12/18/2013, 16:30 (IST)
Seddon Park, Hamilton ,12/19/2013, 03:00 (IST)