Russian winner sends 'sarcastic message to New York crowd
Karen Khachanov appeared to direct a thinly veiled barb at US Open fans
Russian ace Karen Khachanov was accused of taking a dig at US Open fans following his epic quarterfinal victory against Nick Kyrgios in front of a New York crowd which was overwhelmingly backing the Australian.
Khachanov booked a spot in a first-ever Grand Slam semifinal as he overcame Kyrgios in a five-set tussle at Ar