Zemlja shocks Haas to reach Vienna semis, Del Potro wins comfortably

Slovenian’s Grega Zemlja pulled off the biggest shock of the day at the Erste Bank Open 2012 in Vienna, defeating Tommy Haas in three sets 6-4 4-6 6-2. With the level of tennis he has been showing in the second half of the year, it seemed like Haas was a certainty for [...]