Antonio Prieto defeated Carlos Zwetsch 6-7 7-5 6-2 in the Brazil 4 Masters 1 round of 32 on clay. The result followed the form book — Antonio Prieto came in leading the head-to-head 1–0. Antonio Prieto extended the head-to-head to 2–0.
Prieto A. came through in three sets.
Antonio Prieto beat Carlos Zwetsch 6-7 7-5 6-2. Umpiry, "Antonio Prieto vs Carlos Zwetsch — Brazil 4 Masters 1 Round of 32", https://umpiry.com/match/1997-10-25/prieto-vs-zwetsch-brazil-4-masters-1-r32?utm_source=cite (as of 25 October 1997).