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He disposed of former WBA middleweight title holder Mariano Natalio Carrera in four rounds , also boxing in the USA to stop rated mexican middleweight Michi Munoz in six before stepping up to super middleweight to win the WBC Silver belt by a 3rd round stoppage of a former Mexican middleweight champion Gustavo Magallanes .
 WBA, Mariano Natalio Carrera, USA, Michi Munoz, WBC
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 WBA, Mariano Natalio Carrera, USA, Michi Munoz, WBC