Buenos Aires - Austria's Dominic Thiem set up a quarter-final match against local favourite Guido Pella in the Argentina Open.
The top-seeded Thiem beat Argentina's Horacio Zeballos 6-4, 6-3 on Wednesday in the ATP 250 clay-court tournament. Pella topped Spain's Fernando Verdasco 6-2, 6-4.
Argentina's Diego Schwartzman also advanced, beating Brazil's Thomaz Bellucci 3-6, 6-3, 6-2. He will face Slovenia's Aljaz Bedene, a 3-6, 7-5, 6-1 winner over third-seeded Albert Ramos Vinolas of Spain.