at the top of tennis for 311 weeks. federerjust one week fewer. that is five years and nine months. many have been sending their congratulations to the 33 year old serb. a message on wimbledon s official twitterfeed reads. a lifelong dream achieved. congratulations to novak traffic djokovic. djokovic has spoken exclusively to the bbc s lee james about his achievement, saying he s very lucky to have played in an era with federer and rafa nadal. the new generation of top men s tennis players are all really tall, they are very powerful, they have big serves and everything happens very quickly on the court. i think rafa, roger, myself, we had to adjust to that. i feel like we have been able to do that very well and the rivalries that i had with fedor and nadal over the years have made me also a stronger and a better player. of course, they also keep motivating me even more to keep going and, of course, each one of us has their own unique journey and it is wonderful to share the