Welterweight titlist Marcos Maidana enters the biggest fight of his career when he faces pound-for-pound king Floyd Mayweather Jr. in Saturday's title unification bout.
Maidana (35-3, 31 KOs), of Argentina, squares off with Mayweather (45-0, 26 KOs) in his own backyard at the MGM Grand Garden Arena in Las Vegas.
Facing an elusive opponent who surpasses him in terms of speed and experience, the Argentine will need to rely on the power of his fists. But will it be enough?
Let's take a look at our five keys to success for Maidana: