#1 Conor McGregor

While St-Pierre vs Silva was once considered the most exciting dream match in MMA. Today there is surely no bigger prospect than St-Pierre vs McGregor.
Get the latest updates on One Championship Rankings at Sportskeeda and more
We know that both fighters are comfortable fighting at 170lbs and it would be impossible to ignore the idea of two of the biggest stars in UFC history meeting in the octagon in what would surely be the company's biggest pay-per-view event to date.
Dana White has expressed his desire to see both McGregor and St-Pierre defend their belts in the very near future. However, if the stars were to align and GSP vs McGregor became a real possibility, there would surely be no option but to put all title defences on hold and book this dream clash.