|Roles||Competed in Olympic Games|
|Full name||Rossana María•Neffa de los Ríos|
|Used name||Rossana•de los Ríos|
|Born||16 September 1975 in Asunción (PAR)|
|Measurements||160 cm / 53 kg|
Rossana de los Ríos was a Paraguayan tennis player who played professionally from 1989 to 2010. De los Ríos achieved a career-best singles ranking of 51 in the world in November 2001, and a doubles ranking of 52 in the world in May 2003. She competed at the 1992 Barcelona Olympics where she met her future husband Gustavo Neffa, who was part of Paraguay’s football team.
De los Ríos won her first ITF singles title in May 1991 at Francavilla, Italy, beating Ginevra Mugnaini in straight sets. Later that year she won her first ITF doubles title with victory in São Paulo, Brazil with her partner Larissa Schaerer. De los Ríos would win 11 singles titles and 7 doubles titles on the ITF circuit. Her Grand Slam results were mixed, only progressing further than the second round at the French Open.
De los Ríos competed at two Olympic Games. At the 1992 Barcelona Olympics she and Larissa Schaerer became the first women to represent Paraguay at the Olympics. She returned to compete in the singles at the 2000 Sydney Olympics after originally being left out of the Paraguayan delegation for the Games. De los Ríos won her first round match against Květoslava Hrdličková, and then advanced via a walkover against Lindsay Davenport, who was injured. She ultimately lost to Jelena Dokic in the third round of the tournament.
|Games||Discipline (Sport) / Event||NOC / Team||Pos||Medal||As|
|1992 Summer Olympics||Tennis||PAR||Rossana de los Ríos|
|Doubles, Women (Olympic)||Larissa Schaerer||=17|
|2000 Summer Olympics||Tennis||PAR||Rossana de los Ríos|
|Singles, Women (Olympic)||=9|