sentences:  During the WBC's 51st Convention in Bangkok, Thailand, Floyd Mayweather Jr. was named "Supreme Champion", a designation that nobody before him has ever achieved.The WBC bolstered the legitimacy of women's boxing by recognizing fighters such as Christy Martin and Lucia Rijker as contenders for female world titles in 16 weight divisions.The first WBC World Female Champion (on 30 May 2005) was the super bantamweight Jackie Nava from Mexico.