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

<ul><li><p>American involved in disputed point during tournament</p></li><li><p>Gauff called out ‘insane’ amount of abuse online</p></li></ul><p>Coco Gauff said she had been left drained by <a href="https://www.theguardian.com/spor