
Roger Federer concentrates during his quarter-final match against fellow Swiss Stanislas Wawrinka.
Roger Federer concentrates during his quarter-final match against fellow Swiss Stanislas Wawrinka.
Roger Federer beats Stanislas Wawrinka to advance to semis
The word No 2 wins the all-Swiss quarter-final at the Australian Open and awaits either Tomas Berdych or Novak Djokovic.
Press Association
January 25, 2011