N’Dam, a former World Boxing Organisation interim middleweight champion who is one of the leading names competing in the event at the Jose Maria Vargas Dome, produced a superb display to clinch a unanimous triumph.

All three judges scored the bout in his favour and the Cameroonian, a quarter-finalist at the Athens 2004 Olympic Games, will go on to face Ukrainian Solonenko Denys in the last four.

World Championships silver medallist Jonghun Shin, who competed for South Korea at London 2012, progressed as he overcame Nazar Kurotchyn of Ukraine, who represented the Ukraine Otamans in the WSB, in the light flyweight category.

Joselito Velasquez of Mexico, who beat home hope Rafael Martinez in his quarter-final, awaits in the next round for the South Korean.

Argentina’s APB Leandro Blanc is also through to the light flyweight semi-finals thanks to a comprehensive unanimous win over London 2012 Olympian Carlos Suarez of Trinidad and Tobago.

Marlo Delgado of Ecuador booked his spot in the last four of the middleweight division by securing a unanimous success in his clash with the Dominican Republic’s Raul Sanchez Marte, who ended professional fighter Geard Ajetovic of Serbia’s bid for a Rio 2016 place in round one.

Onder Sipal of Turkey will be his opponent in the semi-finals.

“I did my very best in the bout since this is my last chance to qualify for the Rio 2016 Olympic Games,” the Ecuadorian said.

“Our tactics were based around the accuracy of my punches and good footwork to confuse my opponent, and now I expect to win my forthcoming semi-final and take the ticket for Rio on Thursday.”

Venezuela’s Endry Saavedra delivered success for the host nation as he sealed a semi-final berth by defeating Bulgarian Arman Hakobyan and he will entertain Xhek Paskali of Germany.

Paskali reached the next round with a unanimous victory in his all-APB clash with Bogdan Juratoni of Romania.

During the third day of action in the Venezuelan city, AIBA President Ching-Kuo Wu and the President of the Venezuelan Boxing Federation, Fran Lopez, met with boxers who are competing in the tournament.

The AIBA President outlined his commitment to allowing all boxers to be able to pursue their dreams of competing in an Olympic Games at the meeting despite the criticism he has faced for allowing professionals to compete at the Olympics for the first time.

The tournament in Vargas is the only opportunity for professional boxers to qualify for the Rio 2016 Olympic Games.

It follows a controversial ruling, passed unanimously at the International Boxing Association (AIBA) Extraordinary Congress on June 1.

Of the 40 boxers remaining in the competition, 26 will qualify for Rio 2016.