Juan Martin del Potro to undergo wrist surgery . Argentine needs operation on left wrist . But the problem resurfaced at January 's Australian Open , the first grand slam of 2014 , where Del Potro lost in the second round to Roberto Bautista Agut . Del Potro has previously had surgery on his right wrist . Rafael Nadal is out of the Australian Open with a back injury and will not play in Madrid.
Juan Martin del Potro to undergo wrist surgery . Argentine needs operation on left wrist . Del Potro has previously had surgery on his right wrist . Rafael Nadal is out of the Australian Open with a back injury and will not play in Madrid.