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Pictures | Mon Jan 21, 2013 | 11:01am EST

Federer and Serena power into quarter-finals

Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj
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Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville

Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville

Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville
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Serena Williams of the U.S. and Maria Kirilenko of Russia (R) shake hands with the chair umpire after their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Serena Williams of the U.S. and Maria Kirilenko of Russia (R) shake hands with the chair umpire after their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Serena Williams of the U.S. and Maria Kirilenko of Russia (R) shake hands with the chair umpire after their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj
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Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville

Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville

Maria Kirilenko of Russia hits a return to Serena Williams of the U.S. during their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Toby Melville
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REFILE - CORRECTING BYLINE Roger Federer of Switzerland (L) shakes hands with Milos Raonic of Canada after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne

REFILE - CORRECTING BYLINE Roger Federer of Switzerland (L) shakes hands with Milos Raonic of Canada after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne

REFILE - CORRECTING BYLINE Roger Federer of Switzerland (L) shakes hands with Milos Raonic of Canada after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne
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Roger Federer of Switzerland celebrates defeating Milos Raonic of Canada in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Roger Federer of Switzerland celebrates defeating Milos Raonic of Canada in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Roger Federer of Switzerland celebrates defeating Milos Raonic of Canada in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj
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Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Daniel Munoz

Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Daniel Munoz

Serena Williams of the U.S. celebrates defeating Maria Kirilenko of Russia in their women's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Daniel Munoz
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Serena Williams of the U.S. reacts during her women's singles match against Maria Kirilenko of Russia at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Navesh Chitrakar

Serena Williams of the U.S. reacts during her women's singles match against Maria Kirilenko of Russia at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Navesh Chitrakar

Serena Williams of the U.S. reacts during her women's singles match against Maria Kirilenko of Russia at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Navesh Chitrakar
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Andy Murray of Britain (L) shakes hands with Gilles Simon of France after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne

Andy Murray of Britain (L) shakes hands with Gilles Simon of France after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne

Andy Murray of Britain (L) shakes hands with Gilles Simon of France after defeating him in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Tim Wimborne
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Andy Murray of Britain signs autographs for fans after defeating Gilles Simon of France in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/David Gray

Andy Murray of Britain signs autographs for fans after defeating Gilles Simon of France in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/David Gray

Andy Murray of Britain signs autographs for fans after defeating Gilles Simon of France in their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/David Gray
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Andy Murray of Britain hits a return to Gilles Simon of France during their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Andy Murray of Britain hits a return to Gilles Simon of France during their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj

Andy Murray of Britain hits a return to Gilles Simon of France during their men's singles match at the Australian Open tennis tournament in Melbourne January 21, 2013. REUTERS/Damir Sagolj
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