|Birthdate:||August 12, 1989|
Mariana Duque Mariño (born 12 August 1989) is a Colombian tennis player, born in Bogotá. Her career high rank is No. 66, achieved on 12 October 2015, Her doubles tour rank at 8 July 2013 was a career high of 100. Mariana's debuted on the International Tennis Federation (ITF) junior tour in 2004, As a junior, reached the final of the girls' singles tournament at the 2007 French Open, the Colombian defeated 10th-seeded Ksenia Pervak in the first round, and ousted World No. 1 in Juniors, Russian Anastasia Pavlyuchenkova in the semifinals. Mariana lost in the final to France's Alizé Cornet, in three sets. Mariana had some setbacks during the tournament, due to losing her tennis rackets at the airport. Without money to buy replacements, she had to play with rackets someone had lent to her. Despite this, it did not stop her and she still played very well, in her first grand slam tournament. She won her first professional tournament in May 2006, in Mazatlán, Mexico. Her biggest win in senior competition is beating Anna Chakvetadze, No. 26 seed at the 2009 French Open, in three sets.