World No 1 Iga Swiatek crashed out of <a href="https://www.thenationalnews.com/tags/wimbledon/" target="_blank">Wimbledon </a>after losing 7-5, 6-7, 6-2 to Ukraine's Elina Svitolina in the quarter-finals on Tuesday. Svitolina, who returned to the tour from maternity leave just three months ago, raised her game dramatically to beat top-ranked Swiatek on another gloomy day at SW19. The 28-year-old Ukrainian, who gave birth to her daughter in October and returned to the WTA tour in April, won despite being a break down in both of the first two sets against the reigning US Open and French Open champion. Svitolina, also a semi-finalist in 2019, will take on Marketa Vondrousova of the Czech Republic for a place in Saturday's final. "I don't know what is happening right now, it's really unbelievable," Svitolina said. "I'm really, really happy that I got this chance to play here again. I was fighting, it was not easy. Iga is world number one and always fighting. It was an unbelievable match and I'm really happy I could win this one. "Iga is not only a great champion but an unbelievable person. She was one of the first who really helped the Ukrainian people, she was a huge help. So for sure it's not easy to play someone that you share a lot of good moments. Not easy for her either but I'm really proud I could win this one." Swiatek, a four-time major champion, won the French Open last month but was playing in the Wimbledon quarter-finals for the first time. Svitolina was 4-2 down in the opening set and struggled to get her serve going in blustery conditions on Centre Court as Swiatek moved into a 5-3 lead. But the momentum swung Svitolina's way as, from 0-30 down on her serve in the ninth game, she went on to win 16 of the next 18 points to bag the first set. The players then had to endure a 20-minute break as the roof was closed due to gathering clouds. That interruption gave Swiatek a chance to recalibrate and she came back to break Svitolina for a 2-1 lead in the second set. It was back and forth between the two and, when neither player could break the deadlock, they headed into the tiebreak. Svitolina jumped to a 4-2 lead but Swiatek refused to panic and a backhand error handed the Pole the set. But Svitolina kept believing as she broke for a 2-1 lead in the decider. There was no coming back for Swiatek and a forehand into the net handed Svitolina a remarkable win. Meanwhile, unseeded Vondrousova came back from the brink to beat fourth seed Jessica Pegula and reach her first Wimbledon semi-final. The Czech player, ranked 42nd in the world, clawed her way back from 4-1 down in the deciding set to win 6-4, 2-6, 6-4. "I don't know what happened," said the 24-year-old. "I was 1-4 down. It's an amazing feeling. Thank you guys for the support, it was amazing." "My best result here was the second round," she added. "I just got better. I'm just loving grass now."