João Derly Nunes Jr. (born June 2, 1981 in Porto Alegre

Porto Alegre

Porto Alegre is the tenth most populous municipality in Brazil, with 1,409,939 inhabitants, and the centre of Brazil's fourth largest metropolitan area . It is also the capital city of the southernmost Brazilian state of Rio Grande do Sul. The city is the southernmost capital city of a Brazilian...

, Rio Grande do Sul

Rio Grande do Sul

Rio Grande do Sul is the southernmost state in Brazil, and the state with the fifth highest Human Development Index in the country. In this state is located the southernmost city in the country, Chuí, on the border with Uruguay. In the region of Bento Gonçalves and Caxias do Sul, the largest wine...

) is a male judo

Judo

is a modern martial art and combat sport created in Japan in 1882 by Jigoro Kano. Its most prominent feature is its competitive element, where the object is to either throw or takedown one's opponent to the ground, immobilize or otherwise subdue one's opponent with a grappling maneuver, or force an...

ka from Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, the only Brazilian to ever become a two-time world champion, winning consecutively the 2005 World Judo Championships

2005 World Judo Championships

The 2005 World Judo Championships were the 24th edition of the Judo World Championships, and were held in Cairo, Egypt from September 8 to September 11, 2005...

 and 2007 World Judo Championships

2007 World Judo Championships

The 2007 World Judo Championships are the 25th edition of the Judo World Championships, and were held at the Rio Olympic Arena, usually called Arena Multiuso, that was built for the 2007 Pan-American Games, in Jacarepaguá, Rio de Janeiro, Brazil from September 13 to September 16, 2007.The...

. He also won the junior world championship in 2000, the 2007 Pan American Games and has 5 gold, 2 silver and 1 bronze medals in Judo World Cups.

After 2002 South American Games

2002 South American Games

The VII South American Games were a multi-sport event held in 2002 in Rio de Janeiro,...

he was positive tested on in diuretic drugs in order to keep his weight class.