Novak Djokovic was left in tears as he crashed out of the Olympic tennis tourna
ment after a shock defeat to Juan Martin del Potro.
Minutes after Andy Murray and brother Jamie lost their first round doubles match, world No 1 Djokovic went down 7-6 7-6 to Del Potro in an incredible match which left both players overcome with emotion.
Djokovic had not been beaten in the first round of any tournament since January 2009 in Brisbane.