Nicolas Almagro of Spain plays a shot during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open, February 19, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Nicolas Almagro of Spain plays a shot during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open, February 19, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Jose Acasuso of Argentina plays a shot during his men's singles tennis match against Nicolas Almagro of Spain at the ATP Buenos Aires Open, February 19, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Nicolas Almagro of Spain serves during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open, February 19, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Nicolas Almagro of Spain plays a shot during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open, February 19, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Alexandr Dolgopolov of Ukraine plays a shot during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open February 15, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Alexandr Dolgopolov of Ukraine plays a shot during his men's singles tennis match against Jose Acasuso of Argentina at the ATP Buenos Aires Open February 15, 2011. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT TENNIS) 

Marat Safin of Russia signs autographs after winning his first round match against Jose Acasuso of Argentina at the China Open tennis tournament in Beijing October 6, 2009. REUTERS/David Gray (CHINA SPORT TENNIS) 

Marat Safin of Russia hits a shot during his first round match against Jose Acasuso of Argentina at the China Open tennis tournament in Beijing October 6, 2009. REUTERS/David Gray (CHINA SPORT TENNIS) 

Gael Monfils of France hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 6, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Gael Monfils of France reacts to beating Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 6, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina serves to David Ferrer of Spain during their match at the U.S. Open tennis tournament in New York, September 4, 2009. REUTERS/Eduardo Munoz (UNITED STATES SPORT TENNIS) 

David Ferrer of Spain serves to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 4, 2009. REUTERS/Eduardo Munoz (UNITED STATES SPORT TENNIS) 

David Ferrer of Spain hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 4, 2009. REUTERS/Eduardo Munoz (UNITED STATES SPORT TENNIS) 

David Ferrer of Spain hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 4, 2009. REUTERS/Eduardo Munoz (UNITED STATES SPORT TENNIS) 

Marcos Daniel of Brazil serves to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Marcos Daniel of Brazil hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York, September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina hits a return to Marcos Daniel of Brazil during their match at the U.S. Open tennis tournament in New York, September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina serves to Marcos Daniel of Brazil during their match at the U.S. Open tennis tournament in New York, September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Marcos Daniel of Brazil hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Marcos Daniel of Brazil hits a return to Jose Acasuso of Argentina during their match at the U.S. Open tennis tournament in New York September 2, 2009. REUTERS/Ray Stubblebine (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina serves to Roger Federer of Switzerland during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina returns a volley to Roger Federer of Switzerland during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Jose Acasuso of Argentina returns a volley to Roger Federer of Switzerland during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Roger Federer of Switzerland returns a volley to Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS IMAGES OF THE DAY) 

Roger Federer of Switzerland pumps his fist after a shot against Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Roger Federer of Switzerland returns a volley to Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Roger Federer of Switzerland returns a volley to Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament in Cincinnati, August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Roger Federer of Switzerland serves to Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

Roger Federer of Switzerland returns a volley to Jose Acasuso of Argentina during their second round match at the Cincinnati Masters tennis tournament August 19, 2009. REUTERS/John Sommers II (UNITED STATES SPORT TENNIS) 

A general view of the Roy Emerson Arena during the Swiss Open ATP tennis tournament first round match between Germany's Nicolas Kiefer and Argentina's Jose Acasuso in Gstaad July 28, 2009. Picture taken with a 8mm fisheye lens. REUTERS/Michael Buholzer (SWITZERLAND SPORT TENNIS) 

Germany's Nicolas Kiefer serves the ball to Argentina's Jose Acasuso during their first round match at the Swiss Open ATP tennis tournament in Gstaad July 28, 2009. REUTERS/Michael Buholzer (SWITZERLAND) 

Argentina's Leonardo Mayer (R) and his teammate Jose Acasuso take a break during their Davis Cup quarter-final doubles match against the Czech Republic's Radek Stepanek and Tomas Berdych in Ostrava, July 11, 2009. REUTERS/Petr Josek (CZECH REPUBLIC SPORT TENNIS) 

Argentina's Leonardo Mayer (R) listens to his teammate Jose Acasuso during their Davis Cup quarter-final doubles match against Czech Republic's Radek Stepanek and Tomas Berdych in Ostrava, July 11, 2009. REUTERS/Petr Josek (CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Radek Stepanek (L) and his team mate Tomas Berdych react during their Davis Cup World Group quarter-final doubles match against Argentina's Leonardo Mayer and Jose Acasuso in Ostrava, July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Tomas Berdych (L) and Radek Stepanek celebrate with their teammates their victory over Argentina's Leonardo Mayer and Jose Acasuso in their Davis Cup World Group quarter-final doubles match in Ostrava, July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Tomas Berdych (L) and his team mate Radek Stepanek celebrate their victory over Argentina's Leonardo Mayer and Jose Acasuso in their Davis Cup World Group quarter-final doubles match in Ostrava July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Radek Stepanek (L) and his team mate Tomas Berdych react during their Davis Cup World Group quarter-final doubles match against Argentina's Leonardo Mayer and Jose Acasuso in Ostrava July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Tomas Berdych, team captain Jaroslav Navratil and Radek Stepanek (L-R) celebrate their victory over Argentina's Leonardo Mayer and Jose Acasuso in their Davis Cup World Group quarter-final doubles match in Ostrava July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Argentina's Leonardo Mayer (L) listens to his team mate Jose Acasuso during their Davis Cup quarter-final doubles tennis match against Czech Republic's Radek Stepanek and Tomas Berdych in Ostrava July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Czech Republic's Radek Stepanek (rear) watches his team mate Tomas Berdych returning a shot during their Davis Cup quarter-final doubles tennis match against Argentina's Leonardo Mayer and Jose Acasuso in Ostrava July 11, 2009. REUTERS/Petr Josek(CZECH REPUBLIC SPORT TENNIS) 

Argentina's Leonardo Mayer (L) watches his team mate Jose Acasuso returning a shot to Czech Republic's Radek Stepanek and Tomas Berdych during their Davis Cup quarter-final doubles tennis match in Ostrava July 11, 2009. REUTERS/Petr Josek (CZECH REPUBLIC SPORT TENNIS) 

Members of the Argentine's Davis Cup team (L-R), Leonardo Mayer, Juan Monaco, Juan Martin del Potro and Jose Acasuso get ready to pose for a photo after a draw for the Davis Cup World Group quarter-final match against Czech Republic in Ostrava July 9, 2009. REUTERS/Petr Josek (CZECH REPUBLIC SPORT TENNIS) 

Basketball player Tony Parker (R) speaks with an unidentified woman during a match between Roger Federer of Switzerland and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Miroslava 'Mirka' Vavrinec (C), wife of Roger Federer of Switzerland, applauds as her husband won his match against Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) +++ ATTENTION EDITORS : FRENCH LAW REQUIRES THAT THE FACES OF MINORS ARE MASKED IN PUBLICATIONS WITHIN FRANCE +++ 

Roger Federer of Switzerland reacts after winning his match against Jose Acasuso of Argentina at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Switzerland's Roger Federer reacts during his victory over Argentina's Jose Acasuso at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Basketball players Tony Parker (L) and Ronny Turiaf (2nd L) attend a match between Roger Federer of Switzerland and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT BASKETBALL TENNIS) 

Switzerland's Roger Federer returns the ball to Argentina's Jose Acasuso at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Basketball players Ronny Turiaf (top) and Tony Parker attend a match between Roger Federer of Switzerland and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE) 

Basketball players Ronny Turiaf (top) and Tony Parker attend a match between Roger Federer of Switzerland and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Miroslava 'Mirka' Vavrinec, wife of Roger Federer of Switzerland, watches the match between her husband and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Jose Acasuso of Argentina plays a shot during his match against Roger Federer of Switzerland at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Roger Federer of Switzerland wipes his face during his match against Jose Acasuso of Argentina at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Roger Federer of Switzerland wipes his face during his match against Jose Acasuso of Argentina at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Basketball players Ronny Turiaf (L, 2nd row) and Tony Parker (R, top row) attend a match between Roger Federer of Switzerland and Jose Acasuso of Argentina during the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Jose Acasuso of Argentina plays a shot during his match against Roger Federer of Switzerland at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Jose Acasuso of Argentina plays a shot during his match against Roger Federer of Switzerland at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Roger Federer of Switzerland plays a shot during his match against Jose Acasuso of Argentina at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS) 

Roger Federer of Switzerland plays a shot during his match against Jose Acasuso of Argentina at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Vincent Kessler (FRANCE SPORT TENNIS)