Stan Wawrinka is congratulated by Jo-Wilfried Tsonga at the net after his victory. Photo: AFP

Stan Wawrinka wins after heated exchange with Jo-Wilfried Tsonga in Australian Open quarter-final

US Open champion argues with Frenchman before sealing semi-final place in Melbourne with Swiss compatriot Roger Federer up next

Topic |   Australian Open

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Stan Wawrinka is congratulated by Jo-Wilfried Tsonga at the net after his victory. Photo: AFP
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