WATCH: Serena and Gauff box with Mike Tyson

Patrick Mouratoglou's off-season in Florida has brought on a lot of unexpected phenomenons: karaoke duets, choreographed dances, playing with a spoon, and a Serena Williams and Victoria Azarenka reunion.

Baseline had some inkling of what was to come thanks to Chris Eubanks joining the TENNIS.com Podcast a few weeks ago.

"Patrick Mouratoglou actually reached out to me about putting in some time with [him] and I think a couple of his players down in Boca during the off-season," Eubanks said. "Middle of December, we’re going to go down there and we're going get after it."

But no one could have seen all of this fun coming their way, maybe not even Eubanks.

It hasn't stopped yet, as Serena and Coco Gauff got to take boxing lessons with the champ himself, Mike Tyson.

Gauff has had a big week sharing the training block with experienced pros like Serena, and her "big brother" Chris Eubanks.

They really embraced off-court training, even doing a bike and run race, which Tyson's daughter Milan got to take part in.

She was in some great company, as Victoria Azarenka joined the crew, just in time for karaoke night.

Serena and Eubanks' team won the Amazing Race, with a little help from Olympia.

They'll know soon if their hard work has paid off with the 2020 season just around the corner.

Hear Eubanks' recent episode on the TENNIS.com Podcast: