LONDON (AFP) - China's Peng Shuai was narrowly beaten by Polish number 11 seed Agnieszka Radwanska in a thrilling second round match at Wimbledon on Thursday. The Chinese number three lost 6-2, 6-7 (7/6), 9-7 in a three-hour clash on Court 14, but showed plenty of guts and determination throughout. Australia's Lleyton Hewitt rolled back the Wimbledon years on Thursday to reach the third round with a blistering dismissal of Argentine fifth seed Juan Martin del Potro. But while 2002 champion Hewitt had a packed Centre Court on its feet, it was business as usual in the women's draw as five-time champion Venus Williams, French Open winner Svetlana Kuznetsova and world number one Dinara Safina eased into the last 32. The 28-year-old Hewitt demolished giant Argentine del Potro, eight years his junior, 6-3, 7-5, 7-5 to reach the third round for the ninth time and now tackles either Philipp Petzschner or Mischa Zverev for a place in the last 16. The Australian, whose ranking has slipped to 56 following hip surgery, collapsed to his knees in celebration at the end. "I haven't beaten a top five player for a long time," said Hewitt."I was really up for it today. When you have played a final on Centre Court you should be able to handle the pressure but I knew that Juan Martin is a helluva player." Third-seeded Venus Williams, the defending champion, took only an hour to see off Ukraine's Kateryna Bondarenko 6-3, 6-2 while Russian fifth seed Kuznetsova spent just four minutes longer in disposing of France's Pauline Parmentier 6-1, 6-3.Williams goes on to face Spain's Carla Suarez Navarro while Kuznetsova, a three-time quarter-finalist here, meets promising German Sabine Lisicki. "Everything was working for me. I'm on a great run here and I just want to keep it going," said Williams, who played with heavy strapping on her left knee. Safina, still looking for a first Grand Slam debut to back-up her number one status, saw off Paraguay's Rossana De Los Rios 6-3, 7-5.The Russian next plays Belgium's Kirsten Flipkins who ended British interest in the women's singles with a 7-5, 6-1 win over Elena Baltacha. Australian 18th seed Samantha Stosur, a semi-finalist at the French Open, struggled past German qualifier Tatjana Malek 4-6, 7-6 (8/6), 6-4 and will face former world number one Ana Ivanovic. In the men's event, Czech 20th seed Tomas Berdych, Jurgen Melzer, the 26th seed from Austria, and Romanian 31st seed Victor Hanescu all made the last 32.Later Thursday, world number three Andy Murray tackles stylish Latvian Ernests Gulbis for a place in the third round as he continues his campaign to end Britain's 73-year wait for a men's champion. Two-time runner-up Andy Roddick was taking on Russia's Igor Kunitsyn. World number 36 Peng looked well beaten at a set and 5-2 down but fought back and saw off several match points before finally succumbing to the 2005 Wimbledon girls' champion. Radwanska, a quarter-finalist last yeat at the All England Club, faces Chinese 19th seed Li Na in the third round. The first five games went with serve before Radwanska broke, sealing the game with a drop shot followed up by an unreturnable lob. She held serve to leave Peng serving to stay in the set but the Polish number one broke again with another drop shot to take the set 6-2. In the second set, Radwanksa broke to make it 2-0 and took the next game to love. Peng held serve and took her opponent to deuce in the next game but the Pole held out for a 4-1 lead. Peng then began her fightback which left the seed battling hard to stay in the tournament. The Chinese won the next game to love but Radwanska held serve to leave Peng serving to stay in the match. Peng won the game, then broke Radwanska to love and held serve to make it 5-5. The next two games went with serve, forcing the tie break. Radwanska went 3-0 up but Peng dug deep for a 5-4 lead. A long half-volley from the Chinese left Radwanska serving for the match. Peng hit an excellent cross-court winner to level it at 6-6 and took the set when Radwanska fired long. The Pole let her frustrations fly and was given a warning for racquet abuse. In the final set, the first two games went with serve before Radwanska broke and Peng broke back. Radwanska broke for a 3-2 lead but Peng broke straight back. Then the seed broke again and held serve for a 5-3 advantage. Peng was left at two match points down in the next game but saved them both. She salvaged two further match points on the deuce before winning the game to leave her 5-4 down. She broke back to level matters at 5-5, with the next four games going with serve. Radwanska then broke to make it 8-7. Peng had three break points in the next game but the Pole clawed it back to deuce and completed her hard-fought victory in 2 hours 58 minutes when Peng fired long.