Joining Novak Djokovic this year are some of the best players currently topping the rankings .
This year is hoping to repeat 2011 's winning formula of an exhibition match at Boodles and a successful finals at Wimbledon .
Joining Novak Djokovic this year , who is hoping to repeat 2011 's winning formula of an exhibition match at Boodles and a successful finals at Wimbledon , are some of the best players currently topping the rankings .