Canada's Milos Raonic dropped a 7-5, 6-4 decision to Argentina's Carlos Berlocq in quarter-final play Friday at the Portugal Open.
Berlocq, the world No. 62, broke Raonic's serve on four occasions and limited the ninth-ranked Canadian to just six aces. The Argentine will meet Spanish qualifier Daniel Gimeno-Traver in the semifinals at the clay-court event.
It was Berlocq's first victory over a player ranked in the top 10. Gimeno-Traver advanced with a 6-1, 6-2 victory over Spain's Marcel Granollers.
Later Friday, top-seeded Tomas Berdych fought back to beat Leonardo Mayer 3-6, 6-4, 6-4. Berdych broke Mayer six times in the match to overcome losing his own serve five times to the Argentine qualifier.
The Czech player will next face Victor Hanescu after the Romanian eased by Gastao Elias of Portugal 6-1, 7-5.