The 22-year-old said: “I’m disappointed to have to withdraw from the Finals. It has been a great event in Shenzhen, and it’s the biggest WTA event of the year.
“This is not how I wanted to end this tournament or my season. I look forward to getting healthy and hope to be back here in Shenzhen next year.”
Dutchwoman Bertens made her debut at the WTA Finals last year, reaching the semi-finals before losing to eventual champion Elina Svitolina.
She reached a career-high ranking of four in May and currently sits 10th having lost to Aryna Sabalenka in the final of the WTA Elite Trophy last weekend.
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