BOGOTA (AFP) Colombias 2007 French Open junior finalist Mariana Duque Marino won her first WTA title here on Sunday as she beat fifth seed Angelique Kerber of Germany 6-4, 6-3. The 20-year-old Colombian - ranked a lowly 143 in the world - was her countrys first winner of the tournament since Fabiola Zuluaga won her third successive title in 2004. I am very proud to play in my first final here, said Duque Marino. This is really positive for Colombia and for me, added the victor, who was claiming the scalp of her second seed of the week. Duque Marino, who turned professional in 2005 and whose best previous WTA performance was a quarter-final in this tournament, was ecstatic at her victory. It is fantastic. I played really well against a high quality rival.