The clay court specialist won three ATP tournaments in the individual in his career and pulled at the French Open 1999 semi-finals. His best world ranking was 25th place.
In doubles, he mainly celebrated with his fellow countryman Gustavo Kuerten success. With it he won five of seven tournaments and in 1998 reached the quarterfinals of the French Open.
Meligeni started his ATP career in August 1989 with the participation in a Challenger tournament in Sao Paulo. He failed in the first round, but was in a further Challengerturnier 1989 in the third round. His first appearance in the ATP tour was in February 1991 in Guaruja ( Brazil).
In 1992 he made his debut at the U.S. Open and the following year he was able to draw attention to themselves with three tournament victories on the Challenger Tour, the knockout collection at the French Open and a year-end position within the Top 100.
In 1995 he celebrated his first tournament victory in Bastad in individual on the ATP Tour. His first victory in double followed in 1996 in Santiago de Chile. At the 1996 Summer Olympics in Atlanta, he experienced a bitter disappointment when he was defeated in the bronze medal match to the Indian Leander Paes.
His career peak it reached in 1997 with double four tournament victories, including the victory of International Series Gold tournament in Stuttgart on the side of Gustavo Kuerten. In individual he could with his semi-finals at the French Open and his 25th place in the world rankings in October reached the pinnacle of his career in 1999.
- Fourth place at the 1996 Summer Olympics in Atlanta
In the Davis Cup, he won for Brazil of 29 matches thirteen.