体坛英语资讯：Federer reaches fourth round, marathon man Isner loses quickly at Wimbledon

Top seed Roger Federer of Switzerland sailed into the men's singles last 16 at the Wimbledon Championships by beating French veteran Arnaud Clement in straight sets on Friday.

The six-time Wimbledon champion crushed the 32-year-old Frenchman 6-2, 6-4, 6-2, going to face Austrian Jurgen Melzer in the fourth round.

Federer saved the only break point against him, hit 29 winners, made only 12 unforced errors and left Center Court to a rousing standing ovation.

"I get standing ovations 99 percent of the time - doesn't matter if the performance was great or not so great," he said. "I think they're happy to see me, and they love tennis. ... But of course, when I end up winning, and they give me a reception like this, it feels good at the heart."

Melzer, seeded 16th, came from one set down to defeated the 22nd seed Feliciano Lopez of Spain 4-6, 6-3, 6-2, 6-4.

One day after winning the longest tennis match in history, John Isner lost to unseeded Thiemo de Bakker of the Netherlands 6-0, 6-3, 6-2 in just one hour and 14 minutes.

Isner claimed an epic three-day victory over Nicolas Mahut, which lasted 11 hours, 5 minutes and went to 70-68 in the fifth set.

What's more, Isner served no aces Friday after hitting a record 112 against Mahut.

"I've never been this exhausted before," Isner said. "Mentally and physically, I was obviously a bit drained. I just didn't have much in the way of my legs. I was just low on fuel out there. Didn't really have a chance."

Besides, former Wimbledon champion Lleyton Hewitt of Australia battled into the fourth round on Friday, setting up an encounter with the third seed Novak Djokovic.

The 15th seed Hewitt needed two hours and nine minutes to see off French 21st seed Gael Monfils 6-3, 7-6(9), 6-4 to advance into the last 16 at his consecutive 12th appearance at the All England Club.

Hewitt, 29, won the Wimbledon title in 2002. He is going to face Serbian ace Djokovic as the world number three grabbed an easy 6-1, 6-4, 6-4 win over Spanish Albert Montanes on Friday.

Fifth seed Andy Roddick stormed into the fourth round of Wimbledon by beating German Philipp Kohlschreiber here on Friday.

The American served 28 aces to win 7-5, 6-7 (5), 6-3, 6-3.

In women's play, five-time champion Venus Williams secured a place in the fourth round with a 6-4, 6-2 win over Russia's Alisa Kleybanova at Wimbledon on Friday. She will next meet with Australia's Jarmila Groth, and could eventually meet top-ranked sister Serena in the final.

Belgians Justine Henin and Kim Clijsters won in straight sets to set up a fourth-round showdown Monday.

Clijsters, seeded eighth, beat No. 27 Maria Kirilenko 6-3, 6-3. Henin, seeded 17th, defeated No. 12 Nadia Petrova 6-1, 6-4.

Clijsters and Henin will play each other for the 25th time, but the first time in a Grand Slam since 2006.

No. 4 Jelena Jankovic beat No. 28 Alona Bondarenko 6-0, 6-3. No. 11 Marion Bartoli, the 2007 runner-up, defeated Greta Arn 6-3, 6-4.