McEnroe: Djockovic is feeling the pressure

John McEnroe believes Novak Djokovic is feeling the pressure of trying to become the first man for 43 years to hold all four grand slam titles at once.

Not since Rod Laver in 1969 have the trophies been in the possession of one man, and Djokovic will face his latest hurdle later today when he meets Roger Federer in the semi-finals.