Ricardo Izecson dos Santos Leite (born 22 April 1982), commonly known as Kaká, is a Brazilian football midfielder who currently plays for Real Madrid C.F. and the Brazilian national team. He started his footballing career at the age of eight, when he began playing for a local club. By then, he also played tennis, and it was not until he moved on to São Paulo FC and signed his first professional contract with the club at the age of fifteen that he chose to focus on football. In 2003 he joined A.C. Milan for a fee of €8.5 million. While at Milan, Kaká won the Ballon d'Or and FIFA World Player of the Year awards in 2007. In addition to his contributions on the pitch, Kaká is known for his humanitarian work. In 2004, by the time of his appointment, he became the youngest ambassador of the United Nations' World Food Programme.

Even though he was born in Brasilia, he moved with his family to Sao Paulo as a kid and started playing soccer there. He made his Sao Paulo debut at the age of 19 and in a short time he showed that he was different. Skillful, relentless and possessing an excellent shot, he scored 30 goals in his first two seasons.. Many big clubs in Europe set their sights on him, but it was AC Milan who claimed him after paying 8 million dollars.

In Italy he became a great player and won many titles with the Rossoneri. He won the Serie A, a UEFA Champions League trophy, a FIFA Club World Championship and earned a series of personal trophies as well. In 2004 he was the Player of the Year in Serie A, but the avalanche of achievements would come in 2007, when he obtained the Golden Ball, the FIFA World Player trophy and the man-of-the-match award in the FIFA Club World Cup.

He also had a great run with the Brazilian national team. He was rarely-used champion in Japan-Korea 2002 and participated in Germany 2006, where his team was eliminated in the quarter-finals