Floyd Mayweather Jr. vs. Marcos Maidana II, billed as Mayhem, was a world championship boxing match held on September 13, 2014, in the MGM Grand Garden Arena in Las Vegas, United States.^[1][2][3][4]

The fight was won by Mayweather via unanimous decision, with scores of 116-111 twice and 115-112.^[5]

The pair fought earlier that year at the MGM Grand. Despite the bout being closer than most Mayweather bouts, Mayweather won by Majority Decision. The fight with Maidana proved to be one of Floyd's tougher opponents, thus, the rematch seemed likely.

More information Weight Class, vs. ...

Weight Class		vs.		Method	Round	Time	Notes
Welterweight/Light Middleweight	Floyd Mayweather Jr. (c)	def.	Marcos Maidana	UD	12/12		Note 1
Lightweight	Mickey Bey	def.	Miguel Vazquez (c)	SD	12/12		Note 2
Super Bantamweight	Léo Santa Cruz (c)	def.	Manuel Roman	TKO	02/12	0:55	Note 3
Middleweight	James de la Rosa	def.	Alfredo Angulo	UD	10/10
Junior welterweight	Humberto Soto	def.	John Molina Jr.	UD	10/10
Welterweight	Daniel Prussak	def.	Pablo Polanco	TKO	04/10	2:45
Cruiserweight	Andrew Tabiti	def.	Caleb Grummet	TKO	6/6	2:01
Junior welterweight	Wilberth Lopez	def.	Damian Alejandro Sosa	UD	6/6
Welterweight	Fabián Maidana	def.	Jared Teer	TKO	1/4	2:07

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^Note 1 for WBA (Super), WBC and The Ring welterweight titles; WBC, and The Ring super welterweight titles.
^Note 2 For IBF lightweight title.
^Note 3 For WBC super bantamweight title.