Novak Djokovic revealed he is suffering from 'abnormal pain and exhaustion' after he left the Olympics without a medal.
Djokovic lost his semi-final to Alexander Zverev on Friday to see his hopes of gold collapse, but he had the chance for two bronze medals on Saturday.
However, he lost the singles bronze medal match to Pablo Carreno Busta, and then withdrew from the mixed doubles, which he was playing with Nina Stojanovic.
Djokovic cut an obviously frustrated figure in defeat in the singles, throwing his racquet into the stands at one point and then smashing another.
However, Djokovic says the frustration that created those incidents is borne of playing with injuries.
“I am dealing with injuries," Djokovic explained after his defeat to Carreno Busta.
"Not one, more than one. I hope that it won’t stop me from going to the US Open, which is my next big goal.
“I apologise to all the fans in Serbia who I have disappointed. I know everyone expected a medal, I did too.
"I feel bad for Nina because we did not fight for a medal in mixed, but my body said ’enough’.
"I have played under medications and abnormal pain and exhaustion.
"But again, my heart is in the right place, because I know that I gave my all. I love to play for my country.
"Unfortunately, I did not get the result I wanted, but that is sport, we move on.”
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