The record for the longest pro tennis match was 11 hours, 5 minutes and took place over the course of three days. The 2010 Wimbledon tennis match was between John Isner from the US and Nicolas Mahut from France. It finally ended in the maximum fifth set with a final score of 70-68, and a victory for Isner. The tennis match went on for so long because neither opponent was able to break the other’s serve, and official Wimbledon rules did not allow for tiebreakers until the fifth set. Isner also set a record for the most aces served at 112.
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