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Wimbledon flop who tested positive for steroids choked his opponent during match
Tennis has had both its dramatic and occasional scary moments over the years, one of which was provided by former player Stefan Koubek. He took on Daniel Koellerer in an Austrian league match in 2010, when he proceeded to choke his opponent during a changeover.The Austrian star couldn’t hold in his anger and proceeded to clasp his hands around his opponent’s neck, who was sitting in his chair.