BOGOTÁ, Colombia - It wasn't the beginning they were hoping for, but with the whole season ahead of them it wasn't too disappointing. Gisela Dulko and Paola Suárez were beaten in the first round of doubles at the XX Copa BBVA Colsanitas in Bogotá by Mailen Auroux and María Irigoyen, 64 64.

With Suárez just coming out of four and a half years of retirement, there was bound to be some rust, and it showed at times on Wednesday afternoon. While the 35-year-old held both of her service games in the first set, she was broken all three times she stepped up to serve in the second set. But both she and Dulko showed some strong form all around, and in the end there wasn't that much of a difference between the two teams - they both won 62 points.

"Obviously it's disappointing to lose but we came to Bogotá to get the rhythm for Paola, who has not played in a long time," Dulko said. "I think it was a good match. Our opponents played very well today. For us it's positive just to be on the court together and start getting our rhythm for the next tournaments."

"It has been almost five years since I last played, so I just went out there to play without too many expectations," Suárez said. "We did a lot of things well today but there are a lot of things to work on. We can only get better now."

Dulko and Suárez are the only two South Americans in WTA history to reach No.1, both doing so in doubles - Suárez spent 87 weeks there, Dulko 24. Suárez has eight Grand Slam titles with Spain's Virginia Ruano Pascual (one Australian Open, four French Opens and three US Opens); Dulko has one Grand Slam title with Italy's Flavia Pennetta (the 2011 Australian Open).

The Argentine pair's ultimate goal is to win a medal at this year's Olympics. They will continue their quest for WTA success at Monterrey next week.