Monday 27 July 2015 08:13, UK
Top seed Ivo Karlovic fought back after losing a gruelling first set to overcome wild-card Daniel Elahi Galan at the Claro Open in Bogota.
The big-hitting Croatian powered down 13 aces in a tense first set, but it did him little good as the Colombian also served well in front of his home crowd to take it into a tie-break.
Galan edged the lengthy tie-break, but Karlovic's class then shone as the world No 23 prevailed 6-7 (12-14) 6-1 6-3 in just under two hours.
He will now face Radek Stepanek in the quarter-finals after the Czech wild-card demolished sixth seed Sam Groth 6-4 6-0.
Third seed Adrian Mannarino will face Malek Jaziri in the next round after they beat American duo Rajeev Ram 7-5 6-3 and Alexander Sarkissian 6-7 (1/7) 6-3 6-2 respectively.
Second seed Bernard Tomic of Australia is also through to the last eight after he rallied to defeat Adrian Menendez-MacEiras 6-7 (5-7) 6-2 6-4 and will next face Tatsuma Ito, a 6-1 5-7 6-0 winner over Alejandro Gomez.
In the remaining quarter-final, fourth seed Victor Estrella Burgos - a 6-4 6-7 (4-7) 6-2 winner against Yuichi Sugita - will take on Michael Berrer who beat Marcelo Demoliner 6-3 7-6 (7-3).
