Gisela Dulko is an Argentine former tennis player. Although she enjoyed modest success in singles, reaching a career-high ranking of world No. 26 and winning four WTA titles, her speciality was doubles, where she achieved the world No. 1 ranking and won 17 WTA titles. Partnering with Flavia Pennetta, Dulko won the 2010 WTA Tour Championships and the 2011 Australian Open. She also reached the mixed-doubles final at the 2011 US Open, with Eduardo Schwank. During her career, Dulko upset a number of top players on the tour, including Maria Sharapova in the second round of Wimbledon in 2009, Samantha Stosur in the third round of Roland Garros in 2011, and Martina Navratilova in the second round of Wimbledon in 2004 and in Navratilova's final Grand Slam singles match.

Eduardo Jonatan Schwank is a retired professional tennis player from Argentina. In 2011, he reached the finals of the French Open in men's doubles partnering Juan Sebastián Cabal and of the US Open in mixed doubles partnering Gisela Dulko. He was coached by Javier Nalbandian, the brother of David Nalbandian.