Dumitrescu discovered fencing at age ten by circumstance: his mother, a teacher, had a pupil whose father was a fencing coach. He began training at his local club CS Tractorul under Cătălin Albu, who also served as sparring partner in the absence of other sabre fencers in Brașov: the Olympic center was in Iași. He was also frustrated by a lack of money: his parents had to pay for his travel expenses and entrance fees when he began competition. He did not have dedicated fencing shoes either and wore out dozens of ordinary trainers on the piste. The hard training regimen almost made him quit fencing when he was in high school, but he persevered and transferred in 2003 to CS Dinamo București. Dumitrescu graduated in 2006 from the Faculty of physical education and sport of the Transilvania University of Brașov and earned in 2008 a master's degree in marketing and sport management from the Alexandru Ioan Cuza University in Iași. He married in 2009 his high school girlfriend.
Career
Dumitrescu earned his first major title in 2005 with a teambronze medal at the European Championships in Zalaegerszeg. In March 2006 he got on the podium for the first timein a World Cup event with a silver medal in Athens. He also won the European Champion Clubs' Cup with CS Dinamo. A few months later he earned a team gold medal at the European Championships in Izmir. In 2008 Dumitrescu won his first World Cup title in Madrid. He made his Olympic debut in the Beijing Games, but was eliminated in the table of 16 by France's Julien Pillet. He was again tempted to retire because he was tired of commuting between Brașov and Bucharest, but his former teammate Mihai Covaliu, now coach of the national team, persuaded him to go on. In 2009 he won two World Cup stages in Budapest and Warsaw. He was eliminated early in the individual event of the European Championships in Plovdiv, but took the silver medal with Romania. At the World Championships in Antalya he made his way to the final, where he was defeated by Germany's Nicolas Limbach and took the silver medal. He was noted for his “fighting spirit and his intelligence” as well as his technical progress. In the team event Romania created an upset by beating favourites Germany, France and Hungary to meet Italy in the final. Dumitrescu entered for the last bout on 40–34 for Italy and beat Aldo Montano 11–4 to win Romania their first World gold medal in sabre. Dumitrescu finished the 2008–09 season number two in FIE rankings. For this performance he was granted the title of master emeritus in sport. At the men's sabre competition at the 2012 Summer Olympics Dumitrescu was beaten in the match for the third place by Nikolay Kovalev and missed the podium, but won a silver medal in the team sabre event. He retired after the Games to become a coach at CS Dinamo.
