Manny Pacquiao and Juan Manuel Marquez will meet for the fourth time this Saturday night at the MGM Grand In Las Vegas as they renew one of boxing's closest rivalries.

While two of the three fights went to the Pac-Man and the other was called a draw, Marquez has long contended that he has never lost a fight to his adversary, regardless of what the judges ruled on each occasion.

This time round, Pacquiao has promised to knock Marquez out to definitively put an end to the argument of who is the better fighter. So, to warm up for the latest installment of this intriguing series, here are the greatest hits from both guys.

And check out our interview with Pacquiao's longtime trainer Freddie Roach to get the workout that's preparing him to keep his word.

Check out Pacquiao's greatest Hits:

Here are Marquez' greatest hits: