Coco Gauff says online racist abuse during China Open was ‘draining’ after loss to Mertens

American involved in disputed point during tournamentGauff called out ‘insane’ amount of abuse onlineCoco Gauff said she had been left drained by the racist abuse she experienced during the China Open after losing in the last 16 to Elise Mertens.The American was dismayed earlier this week after an incident during her match against Chinese teenager Sun…