Diego Del Rio defeated Gabriel Keymer 6-0 6-2 in the Santiago qualifying round of 16 on clay. The upset overturned the form book — Gabriel Keymer came in leading the head-to-head 1–0, but Diego Del Rio had been the form player, winning 3 of their last 10 on clay. Diego Del Rio claimed a first win over Gabriel Keymer in two meetings, levelling the head-to-head at 1–1.
Del Rio D. took it in straight sets.
Diego Del Rio beat Gabriel Keymer 6-0 6-2. Umpiry, "Diego Del Rio vs Gabriel Keymer — Santiago Qualifying Round of 16", https://umpiry.com/match/2000-02-28/keymer-vs-rio-santiago-q16?utm_source=cite (as of 28 February 2000).