BBC Sport - Wimbledon 2014: Novak Djokovic looks ahead to Roger Federer final
Federer biggest challenge - Djokovic
- From the section Tennis
Wimbledon finalist Novak Djokovic says there is no bigger challenge than playing Roger Federer on grass.
The Serbian faces the seven-time champion on Centre Court, looking for his second Grand Slam title on grass.
The top seed is seeking to end a run of three consecutive defeats in Grand Slam finals by repeating his 2011 Wimbledon success.