Johanna Konta battled her way into the quarter-finals of the Western & Southern Open with victory over Dominika Cibulkova last night.

Seventh-seeded Konta, from Eastbourne, won in straight sets, 6-3 6-4, but did not have it all her own way in a tough battle which took over an hour and a half.

Eleventh seed Cibulkova broke Konta twice and forced three further break points before Konta eventually advanced.

Konta will now face second seed Simona Halep in the quarter-finals. Konta beat Halep in the quarter-finals at Wimbledon earlier this year.