BUENOS AIRES, Feb. 9 (Xinhua) -- Argentine seventh seed Tomas Etcheverry progressed to the Argentina Open round of 16 on Monday with a 6-3, 6-4 win over Italian qualifier Andrea Pellegrino.
Etcheverry, who is ranked No. 54, won 85 percent of points on his first serve and hit seven aces to take the match in an hour and 39 minutes on the outdoor clay of the Buenos Aires Lawn Tennis Club.
World No. 145 Pellegrino struggled for rhythm on his serve and committed 22 unforced errors.
Earlier, Spain's Pedro Martinez also reached the last 16 of the ATP 250 tournament with a 6-4, 6-1 victory over Argentine Lautaro Midon.
