Juan José Ubaldo Cabrera (born April 30, 1979 in Santo Domingo

Santo Domingo

Santo Domingo, known officially as Santo Domingo de Guzmán, is the capital and largest city in the Dominican Republic. Its metropolitan population was 2,084,852 in 2003, and estimated at 3,294,385 in 2010. The city is located on the Caribbean Sea, at the mouth of the Ozama River...

, Distrito Nacional

Distrito Nacional

The Distrito Nacional is a subdivision of the Dominican Republic enclosing the capital Santo Domingo. It is not within any of the provinces, but is itself counted as a province. Before October 16, 2001, the Distrito Nacional was much larger, including what is now known as Santo Domingo Province....

) is a boxer

Boxing

Boxing, also called pugilism, is a combat sport in which two people fight each other using their fists. Boxing is supervised by a referee over a series of between one to three minute intervals called rounds...

 from the Dominican Republic

Dominican Republic

The Dominican Republic is a nation on the island of La Hispaniola, part of the Greater Antilles archipelago in the Caribbean region. The western third of the island is occupied by the nation of Haiti, making Hispaniola one of two Caribbean islands that are shared by two countries...

 best known to win the PanAm title at middleweight as an amateur.

Amateur

At the Sydney Olympics 2000 he lost in the first round to local hero Richard Rowles

Richard Rowles

Richard Rowles is a former light middleweight boxer, who represented Australia at two consecutive Summer Olympics, starting in 1996...

.

Ubaldo won Light Middleweight silver at the 2002 Central American Games

Boxing at the 2002 Central American and Caribbean Games

The Boxing Tournament at the 2002 Central American and Caribbean Games was held in San Salvador, El Salvador from November 29 to December 6.- Medal winners :-References:*...

 losing to Juan Camilo Novoa

Juan Camilo Novoa

Juan Camilo Novoa Aguinaga is a boxer from Colombia, best known for winning the 2002 Central American and Caribbean Games at junior middleweight vs Juan Ubaldo...

.

He added the gold medal at middleweight 2003, at the Pan American Games

Boxing at the 2003 Pan American Games

The Men's Boxing Tournament at the 2003 Pan American Games was held in the Carlos Teo Cruz Boxing Coliseum in Santo Domingo, Dominican Republic from August 8 to August 15....

 in Santo Domingo

Santo Domingo

Santo Domingo, known officially as Santo Domingo de Guzmán, is the capital and largest city in the Dominican Republic. Its metropolitan population was 2,084,852 in 2003, and estimated at 3,294,385 in 2010. The city is located on the Caribbean Sea, at the mouth of the Ozama River...

.
He defeated Jean Pascal

Jean Pascal

Jean-Thenistor Pascal is a Canadian professional boxer. He is the former WBC, IBO and Ring magazine light heavyweight champion of the world.-Early life:...

 19:11 and Yordanis Despaigne

Yordanis Despaigne

Yordanis Despaigne Herrera is a Cuban professional boxer who, as an amateur boxer, has medaled repeatedly in international tournaments as a middleweight.-Career:...

 23:12.

He participated in the 2004 Summer Olympics

Boxing at the 2004 Summer Olympics

Boxing at the 2004 Summer Olympics took place in the Peristeri Olympic Boxing Hall. The event was only open to men and bouts were contested over four rounds of two minutes each...

 for his native Caribbean country. There he was stopped in the first round of the Middleweight (75 kg)

Boxing at the 2004 Summer Olympics - Middleweight

The Middleweight class in the boxing at the 2004 Summer Olympics competition was the fourth-heaviest class. Middleweights were limited to those boxers weighing more than 75 kilograms.-Medalists:-Schedule:-Results: -References:*...

 division by Cameroon's Hassan Ndam Njikam.