"My plan after retirement is to coach Fonseca," Djokovic jokes during a Q&A at the US Open

In a promotional video released by the US Open, several players were asked about a number of topics. Djokovic, for example, was asked by the young Brazilian, Fonseca, what he planned to do after retirement.

To which the Serbian jokingly replied: "My plan after retiring from tennis is to coach Fonseca. I'm going to charge him a lot, so be prepared."

For reference, the 38-year-old player did not hesitate to praise his younger counterpart a few months ago. He had stated: "He has been making waves on the tour in recent months. And rightly so. He is a very good tennis player. He is so young. He has incredible power on both sides of the baseline and on the serve. He is a very complete player."

Both present at Flushing Meadows, the two men have qualified for the second round. The Serbian, a four-time winner of the tournament, will play Svajda, while the Brazilian will face Machac.