Maria Sharapova of Russia blows kisses as she celebrates her victory over Kim Clijsters of Belgium after their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

Model ball boys watch the WTA Championships tennis tournament match between Kim Clijsters of Belgium and Maria Sharapova of Russia in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

Maria Sharapova of Russia celebrates her victory over Kim Clijsters of Belgium during their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

A model ball boy laughs during the WTA Championships tennis tournament match between Kim Clijsters of Belgium and Maria Sharapova of Russia in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

Maria Sharapova of Russia rests in front of a model ball boy during their WTA Championships tennis tournament match against Kim Clijsters of Belgium in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

Maria Sharapova of Russia returns the ball to Kim Clijsters of Belgium during their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

A model ball boy works during the WTA Championships tennis tournament match between Kim Clijsters of Belgium and Maria Sharapova of Russia in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

A model ball boy picks up a ball during the Maria Sharapova-Elena Dementieva WTA Championships tennis tournament match in Madrid November 7, 2006. Male models being used as ball boys at this week's end-of-season WTA Championships need to keep their minds on the job and not be distracted by the female players, world number eight Elena Dementieva said on Monday. REUTERS/Susana Vera (SPAIN) 

Maria Sharapova of Russia walks past a model ball boy during their WTA Championships tennis tournament match against Kim Clijsters of Belgium in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

Maria Sharapova of Russia celebrates her victory over Kim Clijsters of Belgium after their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

Maria Sharapova of Russia returns the ball to Kim Clijsters of Belgium during their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

Maria Sharapova of Russia celebrates her victory over Kim Clijsters of Belgium during their WTA Championships tennis tournament match in Madrid November 8, 2006. REUTERS/Susana Vera (SPAIN) 

Maria Sharapova of Russia rests next to a model ball boy during their WTA Championships tennis tournament match against Kim Clijsters of Belgium in Madrid November 8, 2006. REUTERS/Andrea Comas (SPAIN) 

Russia's Maria Sharapova serves to compatriot Elena Dementieva during their WTA Championships tennis tournament match in Madrid November 7, 2006. REUTERS/Susana Vera (SPAIN)