Five keys for Juan Manuel Marquez

After an incredible knockout victory over Manny Pacquiao in his most recent fight in December, Juan Manuel Marquez knows that the past is the past.

Marquez (55-6-1, 40 KOs), a four-time world champion, will try to earn his fifth title Saturday night (HBO PPV, 9 p.m. ET) at the Thomas & Mack Center in Las Vegas, where he faces welterweight titlist Timothy Bradley in a 12-round bout.

A defeat against Bradley (30-0, 12 KOs) could bring the end to the long career of Marquez, but a victory would make him the only Mexican fighter to win world titles in five different divisions.

Here are five keys to victory for Marquez against Bradley:

Master of disguise

Don't play his game

Plan for the long haul

Are you ready for some boxing?

In Nacho we trust