Revealed: Lionel Messi's son told Novak Djokovic to up his level to surpass Roger Federer as Inter Miami superstar introduced Antonela Roccuzzo & his family to tennis icon at Masters tournament in Florida

Messi took his wife Antonela Roccuzzo and their three sons Thiago, Mateo and Ciro to watch Djokovic in action in the semi-finals of the Miami Open on Friday. Djokovic, who has won more Grand Slams than any men's tennis player in history (24), put on a show for the Inter Miami superstar as he beat Grigor Dimitrov 6-2, 6-3 to set up a final meeting with Jakub Mensik at the ATP Masters 100 event.

Messi and his family were seen laughing and cheering for Djokovic throughout the match in Florida, and they all met up in the locker room after the Serbian had finished his business on the court. However, one of Messi's sons struck a "serious" tone when telling Djokovic what he needed to do to surpass Roger Federer as the oldest Masters champion ever.

"He [Messi] came by the locker room. We spent some time talking and exchanged gifts," Djokovic said. "It’s a huge honour. He’s such a great athlete, not just a football player. His impact on the world of sport in the last 20 years has been immense. To have him watch me live obviously brings me great, great joy and excitement, and also a bit of pressure. I was rated by one of his sons as eight out of 10, which is pretty good. With a serious face, he told me I have to make it 10 out of 10 for the next match. So I have quite a bit of pressure from Messi’s son there! It was a very touching moment for me because it’s one thing that he comes, but then he brings his whole family, his kids, his wife. As a young father myself, I know what that means. It’s different when you bring the whole family."

Unfortunately, Djokovic didn't quite manage to live up to the expectations of Messi's son in the Miami Open final. The 37-year-old missed out on Federer's record and his 100th ATP tour title after being beaten by teenage sensation Mensik 7-6, 7-6 in a gruelling contest.

The day after his meeting with Djokovic, Messi made his return to MLS action with Inter Miami from the bench against the Philadelphia Union after an injury-enforced spell on the sidelines. The Argentina international made an instant impact, too, scoring a brilliant goal two minutes after coming on, which he dedicated to Djokovic by simulating a tennis forehand stroke while celebrating. Miami ended up winning the game 2-1, and will now go into the first leg of their CONCACAF Champions Cup quarter-final first leg against LAFC full of confidence, with Messi likely to be in line for a starting berth.