Gauff reaches maiden quarterfinal in Linz

Fifteen-year-old Coco Gauff is the youngest player to move into the last eight of a WTA event since Sesil Karatancheva back in 2005.

American teenage sensation Cori Gauff   -  Getty Images

Coco Gauff reached her first WTA Tour quarterfinal when Kateryna Kozlova retired in the final set of their Linz Open contest on Wednesday and could face top seed Kiki Bertens in the last eight.

Gauff, a lucky loser following Maria Sakkari's withdrawal, was leading 4-6 6-4 2-0 when her Ukrainian opponent was unable to continue due to a leg injury.

The 15-year-old American won four of the next five games from a break down at 3-2 in the second set with great fighting spirit and is set to move into the top 100 after her passage in the quarter-finals was secured.

Gauff is the youngest player to move into the last eight of a WTA event since Sesil Karatancheva back in 2005.

The teenage prodigy said: "It's been a goal of mine. In January of this year, I sent a message to my friend saying I wanted to finish Top 100, and at the time I was ranked, like, 800, so it was a far-fetched goal, but I'm glad that I was able to accomplish it.

"My other goal was to get in the main draw of two grand slams, and that happened, so I'm glad that I accomplished everything that I wanted this year."

Bertens, in contention to feature in the WTA Finals, saw off Misaki Doi 6-4 7-5 to set up a second-round meeting with Alison Van Uytvanck.

The world number eight broke twice in each set to stay in the hunt for a third title of the year as she bids to secure a place in the season-ending tournament in Shenzhen.

Andrea Petkovic won an all-German second-round match against fifth seed Julia Goerges 7-6 (7-2) 6-0, while Elena Rybakina denied Anna-Lena Friedsam a place in the quarterfinals.

Anastasia Pavlyuchenkova, Jelena Ostapenko and Ekaterina Alexandrova were first-round winners on day three.