Carreno, who won last year's Estoril Open, beat Kicker in two sets, 6-1 and 7-5, in a game that lasted an hour and a half here on Thursday, reports Efe.
Tsitsipas surprised the court as he crushed Anderson in three sets, 6-7 (3), 6-3 and 6-3, in two hours and 15 minutes.
Tsitsipas will face Spaniard Roberto Carballes in the quarterfinals, who moved on to the next round after beating Briton Cameron Norrie 5-7, 6-2, 7-6 (1).
Carreno on Saturday will confront Chilean Nicolas Jarry, who won against Spaniard Ricardo Ojeda 6-3 and 7 (8) -6 (6).
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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