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Either Elina Svitolina or Ashleigh Barty is going to receive a bank transfer (because no-one cashes cheques these days still, right?) for a sum of money which would make even Lionel Messi, Cristiano Ronaldo or Steph Curry widen their eyes.

For a week's work in Shenzhen, defending champion Svitolina or top seed Barty will take home about 4m quid if they finish today with one more win.

As well as another bit of bling for the mantelpiece, the biggest purse in tennis history is also up for grabs...