Johanna Konta produced a superb comeback to stun world No.2 Simona Halep and reach the quarter-finals of the Wuhan Open in China.

Konta, from Eastbourne,  trailed 5-1 in the final set but went on to win six games in a row to clinch a 6-3 3-6 7-5 victory.

The 24-year-old, who has now won 21 of her last 22 matches, is set to face Venus Williams for a place in the semi-finals.