Who did John Isner defeat in the longest professional tennis match in history?
Nicolas Mahut
Ivo Karlovic
Marin Cilic
Sam Querrey
Answer
John Isner defeated Nicolas Mahut in the longest professional tennis match in history at the 2010 Wimbledon Championships. The match lasted 11 hours and 5 minutes, and was played over the course of three days.
Acing the John Isner Quiz: Test Your Knowledge on the Towering American Tennis Star!