Two of the most arrogant men on the planet got to stare each other down face-to-face today

Conor McGregor and Floyd Mayweather are both fighters at the top of their sports.  Floyd, boxing... McGregor, MMA. 

Floyd is currently undefeated and retired at 40-years-old.  McGregor is currently the UFC lightweight champion who is at the top of his career.  

Many are wondering if an MMA fighter would be able to compete in a full-on boxing match.  Most say, that McGregor won't be able to touch Floyd. Others think Floyd simply hasn't had a tough enough opponent to really push him. 

They are both scheduled to fight on August 26 in Las Vegas.

WATCH LIVE Floyd Mayweather & Conor McGregor meet for the 1st time to kick off this week's media tour.

Posted by Showtime Boxing on Tuesday, July 11, 2017

Check out some highlights from their careers.  Do you think Conor "Notorious" McGregor will be able to stand against undefeated, Floyd "Money" Mayweather?