Wuhan, Hubei, China, 27 September 2017 | tennis.com.au

Australia’s Ash Barty is through to the quarterfinals of the WTA Wuhan Open following a three-set win over Agnieszka Radwanska.

Barty overcame the stubborn ninth seed 4-6 6-0 6-4, posting a bagel set for the third straight match as she continues her march through the draw at the Premier 5 event.

Having beaten fifth seed Johanna Konta in the second round, Barty has for the first time posted consecutive victories over top 20-ranked opponents.

“I think it was a really good match the whole way through. I didn’t do much wrong in the first set – Aga just came up with some really good stuff late in the set there. I’m just happy to come through in the end,” Barty said.

“I think the serve was very important today. I needed to serve well and to look after my service games so I could try and do a few inroads in her (service) games.

“I’m very happy. We played very well today and we look forward to our next match.”

The Queenslander was frustrated to blow a 3-1 lead in the first set, but after a coaching consultation steadied the ship and tore through the second set.

She broke serve in the first game of the third set and although Radwanska recovered from 30-0 down to break straight back, Barty broke serve again in the fifth game and never looked back.

She produced a backhand winner for 4-2, a raft of winners to push ahead 5-3 and served impeccably – with two aces and a service winner – in the final game to bring up two match points at 40-15.

Although she failed to convert both of them and missed a third against the gritty Radwanska, she brought up a fourth with a little piece of magic, sticking her racquet out and picking up a backhand slice that she sent short and angled for a crosscourt winner.

She finally sealed victory after almost two hours, finishing with 40 winners to the Pole’s 12.

Next up for the 21-year-old is the winner of the third-round match between No.3 seed Karolina Pliskova and China’s Wang Qiang.