Federer has enjoyed the morale boost of getting to the last four having lost in the quarterfinals in the last two years, a crucial step for those who have written him off as beyond his best.

He eased past Mikhail Youzhny in straight sets in his quarterfinal, showing no signs of the back pain that dogged him in the previous round or the struggles of the third round when he was two sets to love down before beating Julien Benneteau.

But top seed Djokovic has been untroubled, dropping just one set en route to the last four, a run capped by a comfortable straight sets win over Florian Mayer in his quarterfinal.

Djokovic said he will be wary of the dangers posed by Federer on the Wimbledon grass where the Swiss star's record now stands at 64 wins against just seven losses in his 14 visits.

About the broadcaster:

Nelly Min is an editor at China Daily with more than 10 years of experience as a newspaper editor and photographer. She has worked at major newspapers in the U.S., including the Los Angeles Times and the Detroit Free Press. She is also fluent in Korean.

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