After years of bickering and negotiations, Floyd Mayweather and Manny Pacquiao finally face off tomorrow night in Las Vegas.

In what is to be the richest fight the sport has ever seen, Newstalk Breakfast spoke to Richard Barrett from PunditArena.com about the bout.

Mayweather puts his unbeaten record on the line against the Filipino Congressman in a fight that may define both men's careers. 

There has been bickering between both camps all week in the buildup to the fight including the validity of Mayweather's gloves and Pacquiao's protective cup.

Both men will meet later today for the final time before the fight at the weigh ins.