The women’s quarter-finals delivered four nail-biting encounters at Wimbledon on Tuesday, with Serena Williams coming back from a set down to defeat Camila Giorgi 3-6, 6-3, 6-4 and set up a semi-final against Germany’s Julia Goerges.

“This is only my fourth tournament back, so I don’t feel pressure. I don’t feel I have to win this, I don’t feel I have to lose this. I’m just here to prove that I’m back. I still have a long way to go to be where I was,” said Williams.

Goerges also had a fightback of her own as she overcame her good friend, Dutchwoman Kiki Bertens, 3-6, 7-5, 6-1 to reach her maiden Grand Slam semi-final at the age of 29.

“It’s never easy playing a friend, especially when you know each other so well. I don’t know what to say right now. I’m just very happy with my performance today and I’m looking forward to the next one,” said the 13th-seeded Goerges.

The German lost to Williams in the third round at the French Open last month and will be searching for a better outcome this time around.

Latvian Jelena Ostapenko found the fire that earned her the French Open crown last year and battled back from a break down in the opening set to skip past Dominika Cibulkova 7-5, 6-4.

“It was a very tough match but I was just trying to enjoy it because it’s really great to be here in the second week and in the quarter-finals, now I’m in semis. I’m really happy the way I played, I was down in the first set but I was fighting till the end and I think I finished kind of confident,” said the 21-year-old.

Her reward is a semi-final showdown against 2016 runner-up Angelique Kerber, who needed seven match points, and a 10-minute final game to defeat crafty Russian Daria Kasatkina 6-3, 7-5.

Watch highlights above from a memorable day eight at Wimbledon.