A double-hit volley from Ivo Karlovic goes unnoticed by the umpire and costs Jo-Wilfried Tsonga the fourth set during their third-round match at Wimbledon 2015.
Trailing Karlovic by two sets to one, Frenchman Tsonga has set point in the fourth set tie-break when Karlovic double-hits a volley at the net to win the point.
If the illegal shot had been noticed by the officials, the point would have gone to Tsonga and forced a deciding fifth and final set.
However, the Croatian Karlovic went on to win the tie-break and the match to book a potential fourth-round clash with Andy Murray.
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