Korda fired eight aces to Etcheverry's two and won 33 of 39 first-serve points (84.6 percent), but Etcheverry moved on after saving four of six break points and breaking Korda twice in three opportunities.
Dutch qualifier Botic van de Zandschulp beat Spaniard Roberto Bautista Agut 7-5, 6-7 (3), 6-2 in three hours, three minutes.
5 seed Alexander Zverev of Germany made quick work of Austrian wild card Sebastian Ofner, winning 6-4, 6-1 in the first round in Vienna.
8 seed Karen Khachanov defeated Roman Safiullin 6-4, 6-4 in a match between Russians.
Cameron Norrie of Great Britain, Matteo Arnaldi of Italy and Jiri Lehecka of the Czech Republic also advanced.
Persons:
Sebastian Korda, Argentina's Francisco Cerundolo, Aly, Tomas Martin Etcheverry, Korda, Etcheverry, Botic van, Zandschulp, Roberto Bautista Agut, Andy Murray of Great, Germany's Yannick Hanfmann, Argentina's Sebastian Baez, Germany's Jan, Lennard Struff, Alexander Zverev, Sebastian Ofner, Ofner, Zverev, Karen Khachanov, Roman Safiullin, Cameron Norrie, Matteo Arnaldi, Jiri Lehecka
Organizations:
Shanghai, Sports City Arena, Swiss, Basel, Erste Bank, Austrian, Thomson
Locations:
Shanghai, China, Argentina, Germany, Vienna, Great Britain, Italy, Czech Republic