Novak Djokovic cemented his reputation as the ATP tour's jester-in-chief by dancing with a fan at the US Open on Wednesday night.
Fresh from an easy 6-4 6-1,6-2 win over Andreas Haider-Maurer, Djokovic invited a supporter down to share a dance with him on the Arthur Ashe court.
The supporter in question is known to US crowds for his outlandish moves, and Djokovic explained afterwards that he's seen the fan at his matches for a number of years.
During the match he had been making his presence felt, and the Serb described him as "phenomenal" and "a true entertainer" in his post-match on-court interview.
Encouraged by the world No 1's words, the supporter leapt down from his seat to become Djokovic's latest dancing partner, after Serena Williams took that role at the Wimbledon Champions' Dinner.
The pair then engaged in some enthusiastic shirt swapping to conclude a rousing finale to a thoroughly enjoyable piece of post-match entertainment.
"I'm glad that he came down to the court. It was not planned," Djokovic said in his press conference, adding that he's seen the fan at his matches for at least five years.
"He's a true entertainer... Each year I see him in one of my matches, dancing, taking down the layers of the t-shirts. But, you know, it never gets old."