Karen Khachanov during the match against David Boffin corresponding to the Barcelona Open Banc Sabadell, on April 27, 2017. (Photo by Urbanandsport/NurPhoto via Getty Images)
Karen Khachanov during the match against David Boffin corresponding to the Barcelona Open Banc Sabadell, on April 27, 2017. (Photo by Urbanandsport/NurPhoto via Getty Images)