Floyd Mayweather meets Robert Guerrero this Saturday on Showtime. But the fight lacks buzz as fight week kicks off despite Guerrero's legitimacy as a challenger.

Juan Manuel Marquez says that his history with Manny Pacquiao means that the two likely could never be friends, but says the fighters do share professional respect.

Manny Pacquiao takes time out of his preparation for his upcoming bout with Juan Manuel Marquez to meet with a teenager suffering from a brain tumor.

No matter who wins their HBO PPV bout on Saturday, there will not be a fifth fight between Manny Pacquiao and Juan Manuel Marquez.

Live streaming video and results for the official weigh-in for Manny Pacquiao and Juan Manuel Marquez.

Manny Pacquiao is as low as a -250 favorite for his fourth bout with Juan Manuel Marquez in their HBO boxing pay-per-view fight.

A look at the brand new WBO "Champion of the Decade" belt created specially for Juan Manuel Marquez vs. Manny Pacquiao this Saturday night on HBO pay-per-view.

Manny Pacquiao and Juan Manuel Marquez will meet with Nevada State Athletic Commission rep Keith Kizer ahead of their HBO PPV bout to go over the fight's judging criteria.

Manny Pacquiao says that he'd fight Juan Manuel Marquez every week if he had to, saying he respects his rival's "brave heart."