Michael Quintero defeated Sebastian Quintero 6-4 6-2 in the Colombia F1 round of 16 on clay. The result followed the form book — Michael Quintero came in leading the head-to-head 1–0. Michael Quintero extended the head-to-head to 2–0.
Quintero M. took it in straight sets.
Michael Quintero beat Sebastian Quintero 6-4 6-2. Umpiry, "Michael Quintero vs Sebastian Quintero — Colombia F1 Round of 16", https://umpiry.com/match/2003-10-06/quintero-vs-quintero-colombia-f1-r16?utm_source=cite (as of 6 October 2003).