Alessandro Giannessi defeated Facundo Arguello 4-6 6-4 6-1 in the Santiago CH round of 16 on clay. The result followed the form book — Alessandro Giannessi came in leading the head-to-head 1–0, defending last year's round of 32. Alessandro Giannessi extended the head-to-head to 2–0.
Giannessi A. came through in three sets.
Alessandro Giannessi beat Facundo Arguello 4-6 6-4 6-1. Umpiry, "Alessandro Giannessi vs Facundo Arguello — Santiago CH Round of 16", https://umpiry.com/match/2019-03-04/arguello-vs-giannessi-santiago-ch-r16?utm_source=cite (as of 4 March 2019).