Second-seed and local favourite Diego Schwartzman has defeated Spain’s Jaume Munar 7-6 (7-2) 7-6 (7-4) to reach the quarter-finals of the Argentina Open.
Schwartzman will now face Francisco Cerundolo, the Argentinian compatriot he beat to win last year’s title in Buenos Aires.
The world No.15 takes on a rival ranked 92 positions below. Cerundolo beat Serbian Miomir Kecmanovic 6-3 3-6 6-2 to reach the last eight.
Also on Thursday, Italy’s Fabio Fognini topped Spaniard Pedro Martinez. The 34-year-old No.4-seeded player in the clay court tournament won 6-4 7-6 (7-5).
Fognini will take on Argentinian Federico Delbonis on Friday while Norwegian top-seed Casper Ruud faces hometown talent Federico Coria.
Third-seeded Lorenzo Sonego of Italy will play against Spanish veteran Fernando Verdasco for a place in the semi-finals.