Novak Djokovic celebrated beating Dominic Thiem in his first match of the ATP Tour Finals in London by taking on Barcelona defender Gerard Pique in a game of mini-basketball.
Watch the clip further down this article as the two battle it out, but miss the majority of their shots.
It's safe to say neither man should quit their respective sport any time soon to chase an NBA career judging from these efforts.
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Having said that, Djokovic did write: "It's never too late for a basketball career," but all in good spirits of course.
The Serb is attempting to regain his world number one ranking this week that he lost to Andy Murray earlier in the month and needs to better the Brit's result in the tournament to have any hope of finishing the year on top of the world once again.
Pique met the 12-time Grand Slam winner backstage after watching him beat Thiem in three sets, alongside Manchester United boss Jose Mourinho at the O2 Arena.
Djokovic lost the first set on a tiebreak (10-12) before storming back to claim the second and third sets 6-0 and 6-2 in a stunning comeback victory that clearly buoyed him after several months of poor results.
Despite his victory, the world number two was clearly still in a serious mood and was involved in a heated verbal altercation with members of the press who questioned his on-court behaviour after he hit a ball into the crowd.
Djokovic won his second match on Tuesday against Milos Raonic, a man he has never lost to, in straight sets 7-6 7-6, and was due to face Gael Monfils next, but the Frenchman has now pulled out due to injury.
This means the Serb is certain to qualify for the semi-finals and is on track to regain his number one ranking.