Mahan WDs; Presidents Cup play in doubt? By Rex Hoggard Nov 10, 2011 11:10 PM ET . SYDNEY ?As if Fred Couples didn뭪 have enough injuries to deal with, Hunter Mahan withdrew from the Australian Open early Friday with an ailing right shoulder, the byproduct of an ongoing spine issue. Mahan had trainers work on his shoulder before his tee time at The Lakes but decided it was best to rest the injury with next week뭩 Presidents Cup looming and the U.S. team already facing the possibility of a last-minute replacement. Steve Stricker has not played since The Tour Championship because of a neck injury and Couples had said that if Stricker is unable to play next week at Royal Melbourne he would call for Keegan Bradley to replace him. 밒t came on Wednesday night, and Thursday it wasn뭪 great,?Mahan told The Associated Press. 밫oday was the worst it has been. The more I keep swinging, the worse it gets. But I don뭪 see this being a long-term problem for next week.? Mahan, who opened with a 73 on Thursday in Sydney, said he plans to play the matches but did leave the possibility open that he may need to be replaced. 밒f Fred has to call (Bradley), then . . .? According to Mahan뭩 trainer Dr. Craig Davies, it뭩 a similar injury to the one he sustained prior to last year뭩 Ryder Cup. 밐e뭩 extremely mobile in his thoracic spine and rotates a lot through there so on occasion he exceeds normal tolerance,?Davies said. Davies plans to fly to Australia to treat Mahan and also said he expects him to be ?00 percent?for the Presidents Cup. If either Mahan or Stricker can뭪 play Bradley would need to make the trip to Melbourne from Florida, where he is at home after two weeks in China. Couples told GolfChannel.com last week that he would also consider playing either of his assistant captains, John Cook or Jay Haas, if Bradley was unable to make the trip in time. 밒 would have to get the grace of the guys on the team, but I would not want one of Norman뭩 guys to have to sit,?he said.