Ruiz has competed for the USA ten times, reaching the podium each time. She has won three International Racquetball Federation (IRF) World Championships in Women's Doubles. Her first World Championship was in 2006 with
Laura Fenton, when they defeated the Chilean team of
Angela Grisar and Fabiola Marquez in Santo Domingo, Dominican Republic. Ruiz repeated as World Champion in 2008 with
Jackie Paraiso, as they defeated Canadians Geneviève Brodeur and Véronique Guillemette in Kingscourt, Ireland. But in 2010, Ruiz and Paraiso lost to Mexicans
Paola Longoria and
Samantha Salas in the final of the World Championships in Seoul, South Korea. Then in 2012, Ruiz was a late substitution for Kim Waselenchuk in doubles at Worlds, and she played with
Rhonda Rajsich. They lost to Chileans
Angela Grisar and
Carla Muñoz, 15-14, 2-15, 11-10, in the semi-finals, which was the USA's first ever semi-final loss at Worlds in women's doubles. In 2014, Ruiz and
Janel Tisinger were silver medalists in Women's Doubles at the
World Championships losing to Longoria and Salas in the final, 15-4, 15-12. However, in 2016, Ruiz and Tisinger won the
Women's Doubles World Championships by upsetting the Mexican team of Longoria and Salas, who were three-time defending champions, 11-15, 15-9, 11-8, in the final. The win made Ruiz a World Champion for a third time. Ruiz has won three
Pan American Racquetball Championships in doubles, all with
Paraiso as her partner. They first won in 2006, and then again in 2008 and 2009. Ruiz played in the
2011 Pan American Games, playing doubles with
Rhonda Rajsich and earned silver medals in the individual and team events. == US Championships ==