World number 20 Tommy Haas has confirmed that he will miss the rest of the season with a shoulder injury.
The 36-year-old German has been suffering with the problem for the past few weeks, forcing him to recently sit out his home event in Halle.
"At first, I didn't want to take it seriously. Now I can't do it any differently," he is quoted as saying by Sky Sports News. "I'm still intent on coming back, I know what now awaits me and I'll face up to this new challenge."
Haas will undergo an operation to correct the injury in New York on Tuesday.