Hometown favorite Alejandro Falla upset top-seeded Janko Tipsarevic of Serbia 3-6, 6-2, 6-3 on Friday night to advance to the Claro Open Colombia semifinals.
Falla, a Bogota resident, is seeking his first ATP Tour title. The 29-year-old left-hander will face Canada's Vasek Pospisil on Saturday in the hard-court tournament at Centro de Alto Rendimiento. Pospisil beat Italy's Matteo Viola 3-6, 6-3, 6-2.
In the afternoon quarterfinals, second-seeded Kevin Anderson of South Africa beat sixth-seeded Santiago Giraldo of Colombia 6-3, 6-3, and Croatia's Ivo Karlovic topped fifth-seeded Adrian Mannarino of France 7-6 (5), 7-6 (3).