No Americans in men's quarterfinals once again

          Sam Querrey's loss to Stanisias Wawrinka means that for the second straight year there will be no Americans in the quarterfinals.

         Prior to last year, that had never happened.

         Here's the break down by nationality

Two Spaniards: (Which two will be determined later Tuesday night by the result of the David Ferrer-Fernando Verdasco match and the Rafael Nadal and  Feliciano Lopez match.) 

Two Swiss (Roger Federer and Stanislas Wawrinka)

One Frenchman (Gael Monfils)

One Russian (Mikhail (Youzhny)

One Serbian (Novak  Djokovic

One Swede: (Robin Soderling)