BASEL, SWITZERLAND - NOVEMBER 03: Ivan Ljubicic of Croatia (R) and Y.Allegro of Switzerland in action in their doubles match against Bob and Mike Bryan of USA during Day Two of the Davidoff Swiss Indoors Tennis at St Jakobshalle on November 3, 2009 in Basel, Switzerland. (Photo by Julian Finney/Getty Images)

BASEL, SWITZERLAND - NOVEMBER 03: Ivan Ljubicic of Croatia (L) and Y.Allegro of Switzerland look on in their doubles match against Bob and Mike Bryan of USA during Day Two of the Davidoff Swiss Indoors Tennis at St Jakobshalle on November 3, 2009 in Basel, Switzerland. (Photo by Julian Finney/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Ivan Ljubicic of Croatia (R) shakes hands with Rafael Nadal of Spain after having to retire during day six of 2009 Shanghai ATP Masters 1000 at Qi Zhong Tennis Centre on October 16, 2009 in Shanghai, China. (Photo by Victor Fraile/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Ivan Ljubicic of Croatia receives treatment from ATP trainer Hugo Gravil before retiring against Rafal Nadal of Spain during day six of 2009 Shanghai ATP Masters 1000 at Qi Zhong Tennis Centre on October 16, 2009 in Shanghai, China. (Photo by Victor Fraile/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Ivan Ljubicic of Croatia leaves the court after retiring from his match against Rafael Nadal of Spain during day six of the 2009 Shanghai ATP Masters 1000 at Qi Zhong Tennis Centre on October 16, 2009 in Shanghai, China. (Photo by Matthew Stockman/Getty Images)

Ivan Ljubicic of Croatia hits a backhand return against Gael Monfils of France before Monfils retired in the second set during their third round match at the ATP Masters tennis tournament in Shanghai on October 15, 2009. Ljubicic defeated Monfils 6-3, 3-0. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Ivan Ljubicic of Croatia hits a backhand return against Gael Monfils of France who retired in the second set during their third round match at the ATP Masters tennis tournament in Shanghai on October 15, 2009. Ljubicic defeated Monfils 6-3, 3-0. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Ivan Ljubicic of Croatia hits a forehand return against Gael Monfils of France who retired in the second set during their third round match at the ATP Masters tennis tournament in Shanghai on October 15, 2009. Ljubicic defeated Monfils 6-3, 3-0. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Ivan Ljubicic of Croatia looks on during his match against Fernando Verdasco of Spain in their second round match at the ATP Shanghai Masters tennis tournament in Shanghai on October 14, 2009. Ljubicic won 6-4, 7-6 (6) . AFP PHOTO / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

Ivan Ljubicic of Croatia hits a return against Fernando Verdasco of Spain in their second round match at the ATP Shanghai Masters tennis tournament in Shanghai on October 14, 2009. Ljubicic won 6-4, 7-6 (6) . AFP PHOTO / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

Ivan Ljubicic of Croatia reacts after defeating Fernando Verdasco of Spain in their second round match at the ATP Shanghai Masters tennis tournament in Shanghai on October 14, 2009. Ljubicic won 6-4, 7-6 (6) . AFP PHOTO / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

SHANGHAI, CHINA - OCTOBER 13: Ivan Ljubicic of Croatia lunges for a ball while playing Julien Benneteau of France during their Round one match on day three of the 2009 Shanghai ATP Masters 1000 at Qi Zhong Tennis Centre on October 13, 2009 in (Photo by Matthew Stockman/Getty Images)

Ivan Ljubicic of Croatia reacts after defeating Julien Benneteau of France in their first round match at the ATP Shanghai Masters tennis tournament in Shanghai on October 13, 2009. Ljubicic won 6-3, 3-6, 6-1. AFP PHOTO / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

Ivan Ljubicic of Croatia hits a returns against Julien Benneteau of France in their first round match at the ATP Shanghai Masters tennis tournament in Shanghai on October 13, 2009. Ljubicic won 6-3, 3-6, 6-1. AFP PHOTO / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)