The championship will feature eight of the world's top 12 players: Rafael Nadal, Novak Djokovic, AndyMurray, Juan Martin Del Potro, Andy Roddick, Fernando Verdasco, Jo Wilfried Tsonga and Marin Cilic.
The grass-based tournament will feature world number three AndyMurray and three former world number ones: Andy Roddick, Lleyton Hewitt and Marat Safin.