Gisela Dulko, a former No.1 doubles player with arguably the best hair on tour, has decided to retire from tennis at the age of 27. Dulko won 4 WTA singles titles and 17 doubles titles, including the 2011 Australian Open with Flavia Pennetta. Dulko wrote a touching message on her website that said that she needs to focus on other priorities now. Of course, the first thing that came to everyone's mind was BABIES. But babies with hubby Fernando Gago may not be on the cards just yet, Gisela runs the Dulko Tennis Academy with her brother. Here's some of our favourite images of Dulko's career... and her hair.