The former world number one , who is without a tournament win in 18 months , was forced to pull out of the players championship at sawgrass in may after suffering knee and achilles problems .

已经18个月里没有拿到过锦标赛冠军的前世界第一，在遭受膝盖和跟腱伤痛困扰之后被迫退出五月份在索格拉斯球场举行的球员锦标赛。