Croatia's Marin Cilic returns the ball to France's Gael Monfils during their BNP Masters indoor tennis tournament in Paris, Friday, Nov. 13, 2009.

Marin Cilic, of Croatia, returns the ball to Gael Monfils, of France, during the BNP Masters indoor tennis tournament in Paris, Friday, Nov. 13, 2009.

Marin Cilic, of Croatia, returns the ball to Gael Monfils, of France, during BNP Masters indoor tennis tournament in Paris, Friday, Nov. 13, 2009.

Croatia's Marin Cilic serves during a quarter final match against Czech's Radek Stepanek (out of camera range) at the Swiss Indoors tennis tournament on November 6, 2009 in Basel. AFP PHOTO / SEBASTIAN DERUNGS (Photo credit should read SEBASTIAN DERUNGS/AFP/Getty Images)

Croatia's Marin Cilic returns the ball to Czech's Radek Stepanek (out of camera range) during their quarter final match at the Swiss Indoors tennis tournament on November 6, 2009 in Basel. AFP PHOTO / SEBASTIAN DERUNGS (Photo credit should read SEBASTIAN DERUNGS/AFP/Getty Images)

Croatia's Marin Cilic returns the ball to Czech's Radek Stepanek (out of camera range) during their quarter final match at the Swiss Indoors tennis tournament on November 6, 2009 in Basel. AFP PHOTO / SEBASTIAN DERUNGS (Photo credit should read SEBASTIAN DERUNGS/AFP/Getty Images)

Marin Cilic of Croatia hits a backhand return against Tomas Berdych of Czech Republic during first round action at the Shanghai ATP Masters tennis tournament in Shanghai on October 13, 2009. Berdych defeated Cilic 7-6 (10/8),3-6,6-4. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Marin Cilic of Croatia hits a backhand return against Tomas Berdych of Czech Republic during first round action at the Shanghai ATP Masters tennis tournament in Shanghai on October 13, 2009. Berdych defeated Cilic 7-6 (10/8),3-6,6-4. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Marin Cilic of Croatia hits a backhand return against Tomas Berdych of Czech Republic during first round action at the Shanghai ATP Masters tennis tournament in Shanghai on October 13, 2009. Berdych defeated Cilic 7-6 (10/8),3-6,6-4. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Marin Cilic of Croatia reacts to a lost point against Tomas Berdych of Czech Republic during first round action at the ATP Masters tennis tournament in Shanghai on October 13, 2009. Berdych defeated Cilic 7-6 (10/8),3-6,6-4. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

Marin Cilic of Croatia hits a backhand return against Tomas Berdych of Czech Republic during first round action at the ATP Masters tennis tournament in Shanghai on October 13, 2009. Berdych defeated Cilic 7-6 (10/8),3-6,6-4. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)

BEIJING - OCTOBER 11: Marin Cilic of Croatia returns a shot against Novak Djokovic of Serbia in the men's final match during day ten of the 2009 China Open at the National Tennis Centre on October 11, 2009 in Beijing, China. Bob Bryan and Mike Bryan of USA win the tournament. (Photo by Feng Li/Getty Images)

Marin Cilic of Croatia hits a return against Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/PETER PARKS (Photo credit should read PETER PARKS/AFP/Getty Images)

BEIJING - OCTOBER 10: Marin Cilic of Croatia returns a shot against Rafael Nadal of Spain in the Semifinals during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 10: Marin Cilic of Croatia celebrates winning against Rafael Nadal of Spain in the Semifinals during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 10: Marin Cilic of Croatia celebrates winning against Rafael Nadal of Spain in the Semifinals during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

Marin Cilic of Croatia hits a return against Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Marin Cilic of Croatia hits a return against Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Marin Cilic of Croatia hits a return against Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Marin Cilic of Croatia celebrates after beating Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Marin Cilic of Croatia celebrates after beating Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Marin Cilic of Croatia hits a return against Rafael Nadal of Spain during a semi-final match of the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Cilic beat Nadal 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)