Conor McGregor and Cristiano Ronaldo have got several things in common. They are both at the top of their respective professions, they are both insanely rich, and they both have physiques that would make Hercules blush.
So it only seems natural that the UFC fighter and the Real Madrid forward would come together for a promotional synergy on Instagram.
Ronaldo, 31, is enjoying a well-deserved summer break after Portugal's triumphant Euro 2016 campaign and obviously decided that Las Vegas was a good place to unwind.
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That gave him the perfect opportunity to meet up with McGregor at his Sin City training camp. The Irish fighter is training hard ahead of UFC 202 where he will face his conqueror Nate Diaz but was able to take some time out to host the three-time Ballon d'Or winner.
But so competitive is the 28-year-old, he could not help but throw down a cheeky challenge in his Instagram post. McGregor claims he has his eyes set on Ronaldo's place in the Forbes list, which he topped earlier this year.
He wrote: "My brother Ronaldo dropped by the gym today! He is an animal. Thank you @cristiano, much respect! I will see you for that Forbes number 1 spot next year."
Ronaldo obviously wasn't in the same competitive mood, writing a simple "good to see you bro" in his accompanying picture.
The Forbes list
With Floyd Mayweather out of the picture, Ronaldo was free to top the famous Forbes list with annual earnings of $88million. Around $56m of this came from his Real Madrid salary with the rest made from endorsements.
He is quite significantly ahead of his arch-rival Lionel Messi, who earned $81.4m in the same time period. But all Messi needs to catch up is sign one new endorsement deal or a pay rise from Barcelona.
In comparison, McGregor has got some way to go if he is to take Ronaldo's crown. He came in at a lowly 85th in the list with earnings of $22m, four times less than Ronaldo's pay packet.
Maybe that's why he was so desperate to fight the money man himself. Several months ago, reports circulated that McGregor was ready to take up boxing and fight the undefeated Mayweather in a fight that would generate huge money for both men involved.
The latest report says McGregor is demanding an even split, which would be enough to vault him all the way to the top of the pile.