Robin Haase upset top seed Jo-Wilfried Tsonga 7-5, 7-6 (7/4) to earn a Sunday final at the Austrian Open against German veteran Tommy Haas.
Haas reached his third Vienna final as furious opponent Lukas Rosol cracked a racquet in half when facing six match points, drawing a point penalty which handed his German opponent a 3-6, 6-4, 7-6 (7/0) win.
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Tsonga was playing with a heavy strapping on the left knee which kept him out of tennis for three months.