Chardy battles past gutsy Garin
Third seed Jeremy Chardy was given a scare by teenage wild card Christian Garin before booking his place in the VTR Open last eight in Chile.
The Frenchman reached the last eight of the Australian Open last month, his best result at a grand slam, but looked on course for a surprise defeat when he lost the first set against his 16-year-old opponent in Vina del Mar.
Chardy used all of his experience and saved nine of 10 break points to triumph 4-6 6-3 6-2 in one hour and 43 minutes to set up a clash with Italian sixth seed Paolo Lorenzi, who eased past former world number five Tommy Robredo of Spain 6-4 6-4.
Daniel Gimeno-Traver will face top seed and fellow Spaniard Rafael Nadal after a 6-4 6-4 win over compatriot Albert Montanes.
Nadal, meanwhile, advanced to the semi-finals of the doubles competition alongside Argentine Juan Monaco after a 6-2 7-6 (7/4) win over Guillaume Rufin and Filippo Volandri.
It was a bad day all round for Italian Volandri as he also lost in the singles - 6-7 (5/7) 6-3 7-5 against Spain's Albert Ramos, who will next face Horacio Zeballos following his surprise 6-3 6-3 win over fourth seed Pablo Andujar.