Marathon Doubles match breaks record - London 2012 - Tennis
More Olympic Tennis records have been broken in the men's Doubles clash between Marcelo Melo and Bruno Soares and Tomas Berdych and Radek Stepanek at Wimbledon.
The Brazilians eventually won 1-6 6-4 24-22 - the most games ever played in a set and in a match in Olympic Doubles history.
Yesterday Jo-Wilfried Tsonga beat Milos Raonic 6-3 3-6 25-23 in the longest three-set match in Olympic history in terms of the number of games played.
It was a tougher than expected match for the Wimbledon champion, who made the perfect start with a break of serve in his opponent's first game but allowed Istomin to level.
The Uzbek then had three break points at 5-5 but could not take them and he paid the price, with Federer wrapping up a 7-5 6-3 victory on Court One.
Eighth seed Juan Martin Del Potro also reached the last eight, while 11th seed Nicolas Almagro from Spain beat Steve Darcis 7-5 6-3.