McGregor said he will knock out Mayweather within 4 rounds. And he said "Mark my words" it's completely different on his profession but I did put my bet on Mayweather. It's just about the money and sports nowadays is just about business. We can't tell but maybe Conor has a grudge to Mayweather's boasting attitude.
It will be hard to mcgregor to beat mayweather in just a round 4 it is not a UFC fight ,it is nore on ability ang knowledge ,mcgregor isn't a boxer although he have some skills and real hard fights than mayweather they have both a good advantages in different point however floyd is too smart in boxing .He do dirty punch and keep hugging or running . I hope this fight will be a good punch for punch battle.