Education
He graduated the Journalism faculty and the Bucharest Academy of Economic Studies International Business and Economics profile.
He graduated the Journalism faculty and the Bucharest Academy of Economic Studies International Business and Economics profile.
He was inducted in March 2011 in the World"s Hall of Fame "The 50 Greatest Armwrestlers In History". In his youth at the age of 12 he made plans to run out of Communist Romania and started an intensive training program that included daily jogging and swimming so that he could be ready, by the age of 17, for any obstacle that could emerge during his intended flight from the country. His first contact with sports took place at Football Club Dinamo Bucureşti where he played football at a youth level, but he soon found tennis more interesting and started to train under the guidance of Florin Segărceanu.
Foreign the left arm Oncescu had to engage in 10 matches, and of his opponents five of them were past world champions.
The next day he had to compete for the right arm championship, and was engaged in eight matches and reached the final where he met the same Dzambolat Tsoriev. He had to engage in 20 matches, 10 for the left arm and 10 for the right arm on his way to his two world titles.
On 2009 shot down 100 opponents. On 2010 shot down 300 opponents.
The show was televised live on sport.ro television channel.
Ion Oncescu won his first national arm wrestling title when he was 18 years old and since then has been undisputed champion despite starting specific arm wrestling training in 2005, nine years after his debut. He became a first time world champion at the XXIXth World Armwrestling Championships held in Veliko Tarnovo, Bulgaria in October 2007. In the second round he surprisingly lost against the Bulgarian champion Stoyan Golemanov, but recovered and reached the final against Russian Dzambolat Tsoriev, who was undefeated at that time. Ion Oncescu won 2–0 and became world champion for the first time in his career. Oncescu lost the first match but won the other two and became world champion for the right arm and for the whole tournament world undisputed champion, receiving United States$23,000 in prize money. Ion Oncescu won his third and fourth world title at the World Armwrestling Championships held in Kelowna, Canada. In 2007 at the Nemiroff World Cup, Oncescu fulfilled his lifelong dream of winning against Polish born American arm wrestling champion John Brzenk, but eventually lost against Ukrainian Andrei Puskar. On 20 February 2011 event "Oncescu versus 500" at Băneasa Shopping City and live on Sport.ro shot down 500 opponents (including: K-1 fighter Tolea Ciumac. Weightlifting champion Ninel Miculescu. Professional basketball player Virgil Stănescu. Darts, bodybuilding and throwing ball national champion Daniel Racoveanu). On February 12, 2012 at Sun Plaza Bucharest, after a contest of almost 8 hours with 1000 opponents, Oncescu set a new World Record, which was certified by Guinness World Records representative, beating all the 1000 participants (even 1024 until stop contest).