Alternate Kiki Bertens makes WTA Finals mark by beating world number one Ashleigh Barty

Kiki Bertens at WTA Finals

Kiki Bertens made sure she took full advantage of her late inclusion at the WTA Finals in Shenzhen by beating world number one Ashleigh Barty.

Bertens only got her chance in the tournament as an alternate for the injured Naomi Osaka, who withdrew from the tournament after playing one match.

It looked like being a short-lived campaign to reach the knock-out stages when Barty led by a set and 3-2 but the Australian went badly off the boil, losing eight games in a row to trail 4-0 in the decider.

She mounted a comeback but Bertens played a fine final service game to win 3-6 6-3 6-4.

Osaka won her opening match on Sunday, defeating Petra Kvitova in three sets in a compelling replay of their Australian Open final, but a right shoulder problem suffered earlier this month curtailed her campaign.

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.

RELATED: ‘Disappointed’ Naomi Osaka forced out of WTA Finals with an injury

She will take on Belinda Bencic in her second group match on Thursday, where victory would give her a great chance of making the last four again.

Barty defeated Bencic in her first match and will play Kvitova next.

All four women in the group still have a chance of qualifying for the semi-finals after Bencic claimed her first victory at the tournament, beating Kvitova 6-3 1-6 6-4.

Defeat for the young Swiss would have eliminated her from contention but Bencic bounced back strongly after losing a one-sided second set.

Follow us on Twitter @T365Official and like our Facebook page.