Date of Birth: 
Place of Birth: Buenos Aires, Argentina
About Mariana Díaz Oliva
- Mariana Díaz Oliva (born 11 March 1976) is a retired professional female tennis player from Argentina.
- Díaz Oliva played professionally from September 1992 until 12 October 2006.
- Her highest ranks were world No.
- 42 for singles and No.
- 93 for doubles, both achieved in 2001.
- At the 2001 Croatian Bol Ladies Open she defeated Kim Clijsters to reach the singles final, where she lost to Ángeles Montolio.
- In 2002 she won the Internazionali Femminili di Palermo.
- In 2003 she reached the Mexican Open singles final.
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