Amanda Anisimova won the battle of the 17-year-olds in Bogota, where she outlasted wildcard Maria Camila Osorio Serrano in the quarters.
Teenager and sixth seed Amanda Anisimova reached the Bogota Open semi-finals, while Astra Sharma set up a showdown with former champion Lara Arruabarrena.
American Anisimova won the battle of the 17-year-olds in Bogota, where she outlasted wildcard Maria Camila Osorio Serrano 6-2 1-6 6-3 on Friday.
World number 438 Osorio Serrano was a menace throughout, however, Anisimova managed to prevail thanks to 32 winners after almost two hours on the Colombian clay.
Despite tallying 55 unforced errors – nearly double the amount of Osorio Serrano – Anisimova saved 13 of the Colombian’s 17 break points.
Battles past Osorio Serrano, 6-2, 1-6, 6-3! pic.twitter.com/WVzCSpCv3f
— WTA (@WTA) April 13, 2019
“I’ve been playing well here, I’m going to keep doing what I was doing, and we’ll see how it goes,” Anisimova said.
Australian Sharma moved through to her first WTA semi-final thanks to a 6-1 7-5 victory against former world number five and 2012 French Open runner-up Sara Errani.
Next up for Sharma is 2012 champion and 11th seed Arruabarrena, who beat fifth seed Tamara Zidansek 6-4 6-2.