Juan Robinson Gamonal defeated Miguel Miranda 6-1 6-1 in the Chile 1 Masters 4 round of 32 on clay. The upset overturned the form book — Miguel Miranda came in leading the head-to-head 1–0. Juan Robinson Gamonal claimed a first win over Miguel Miranda in two meetings, levelling the head-to-head at 1–1.
Robinson Gamonal J. took it in straight sets.
Juan Robinson Gamonal beat Miguel Miranda 6-1 6-1. Umpiry, "Juan Robinson Gamonal vs Miguel Miranda — Chile 1 Masters 4 Round of 32", https://umpiry.com/match/1997-05-03/gamonal-vs-miranda-chile-1-masters-4-r32?utm_source=cite (as of 3 May 1997).