Austria's Dominic Thiem has set up a quarter-final match against local favourite Guido Pella in the Argentina Open.
Top-seeded Thiem beat Argentina's Horacio Zeballos 6-4 6-3 on Wednesday in the ATP 250 clay-court tournament while Pella accounted for 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 next faces Slovenia's Aljaz Bedene, a 3-6 7-5 6-1 winner over third-seeded Albert Ramos Vinolas of Spain.
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