It looks quite true:
Fight news announced the same a few moments ago: Pacman agrees to fight Mayweather | Fightnews - Boxing News Updated 24/7
Rds.ca states the same: Mayweather-Pacquiao : ce serait fait - RDS.ca
Yahoo sports:Adviser: Pacquiao to fight Mayweather in March - Boxing - Yahoo! Sports
sports illustrated: Manny Pacquiao to fight Floyd Mayweather on March 13 - SI.com - Boxing
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