BERLIN: World number 11 Tommy Haas of Germany has pulled out of next week's Hamburg Masters due to a troublesome shoulder.   

"Hamburg is out of the question -- it's not going to happen," Haas, who was born in the city, told German sports news agency SID on Thursday.   

He added that he might not recover in time for the World Team Cup in Duesseldorf later this month.   

Argentine David Nalbandian has also pulled out due to injury, organisers said.