Héctor Walter Baldassi was born in Córdoba, Argentina. He started refereeing when he was 25, and was promoted to the Argentinian football league's 1st division in 1998.
He was a CONMEBOL Elite Category referee until the end of 2011, when he had to retire (45)
From about 2002, he is considered to be one of the best referees in his country. After Horacio Elizondo's retirement in 2006, he was elected best referee in many polls. He's a man who likes to "free" the game, doesn't like to cut the action and tries not to show more cards than needed.
One of Baldassi's most recognized skills is to be very well located, which helps him to have full control of the game. Sometimes he runs even to lateral lines just to be near the ball.
Baldassi refereed in the Copa América Perú 2004, but Argentina arrived to the final so he couldn't go further than the quarterfinal round. He was the man in the 2006 Copa Sudamericana's final, between Pachuca of Mexico and Colo Colo of Chile. And, of course, he officiated 4 so-called "Superclasicos" between River Plate and Boca Juniors in Argentina.
The most-important one: the 2008 Copa Libertadores second leg final between Fluminense and LDU Quito.
Baldassi took part in the 2008 Olympic tournament in Beijing august 2008. He got as far as a quarter-final.
In 2007 he was nominated for the U-20 FIFA World Cup in Canada and again for the U-20 FIFA World Cup in Nigeria in 2009.
So it was no surprise when he appeared on the final list for the 2010 World Cup. It was his first World Cup and due to FIFA's retiring policy his last as well.
Baldassi did very well in South Africa, with the average marks he got for 4 matches, he ended highest on the WorldReferee list.