Muguruza back from the brink to beat Keys

Wimbledon champion Garbiñe Muguruza held on to beat Madison Keys at the Cincinnati Masters on Thursday, saving three match points to win 6-4, 3-6, 7-6(3) and move into the quarter-finals.

Following a lengthy delay for rain, the fourth-seeded Spaniard found herself 6-5 down in the deciding set with Keys serving at 40-15.

The sixth seed then hit two shots into the net and wasted another break point before Muguruza broke Keys to force a tiebreak, which she duly won.

Keys lamented her missed opportunity after the match.

"I obviously had some unforced errors that I wasn't happy about, but I felt like I had to go for it because she was just going to make everything," Keys said.

Muguruza now faces Russia’s Svetlana Kuznetsova in the quarter-finals after she beat Spain’s Carla Suarez Navarro in straight sets.

Earlier in the day, second seed Simona Halep saw off the challenge of 15th-seed Anastasija Sevastova 6-4, 6-3.

"I'm not playing my best tennis, but winning when I'm not playing good is a plus for me," said Halep.

In other action on Thursday, sixth seed Caroline Wozniacki defeated Australia’s Ash Barty 6-4, 6-2, while Johanna Konta (7) defeated Dominika Cibulkova (11) 6-3, 6-4.

Top seed Karolina Pliskova’s match was suspended with the world number one leading Camila Giorgi of Italy 3-0.