Five keys for Floyd Mayweather Jr.

— -- Fresh off his closest victory in 12 years, pound-for-pound king Floyd Mayweather Jr. enters just the second rematch of his career on Saturday.

Mayweather (46-0, 26 KOs) faces Marcos Maidana at the MGM Grand Garden Arena in Las Vegas (Showtime PPV, 8 p.m. ET) in a rematch of their May showdown, which Mayweather won by majority decision.

Maidana (35-4, 31 KOs), who came surprisingly close to solving Mayweather's riddle, will need to amp up the pressure even more in order to get a victory in the rematch.

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Should Mayweather, 37, hope for a second straight victory against the Argentine slugger, he should follow these keys to victory: