Milos Raonic has become the latest player to withdraw from the Western and Southern Open.
Raonic has pulled out from the tournament in Cincinnati because of a wrist injury.
The world number 10 joins Roger Federer, Andy Murray and Marin Cilic in withdrawing, while Novak Djokovic and Stan Wawrinka will not play again this season.
Raonic said: "My wrist injury has not healed. I always play well in Cincinnati and will miss the great fans."