sport and for a full round up, let s go to the bbc sport centre. hello from the bbc sport centre it s only day one of wimbledon, but already play has been disrupted by the weather. the roof came on over centre court, where the reigning men s singles champion novak djokovic has begun the defence of his title against pedro cachin. chethan pathak is watching and chetan it s going to plan so far for the number to seed? we had that sizeable delay in which novak djokovic was walking around centre court not happy with how slippery the surface was. they got the roof on pretty quickly but they delayed play for over an hour. it won t delay the inevitable though, he is looking very comfortable against pedro cachin, the 28 year old argentinian being the biggest match of his life. he had a good start and broke novak djokovic early on but novak djokovic looks cool and calm and it s a decade since he lost on that court. he is trying to win his eighth wimbledon title which would bring them l