German Puentes defeated Oscar Serrano 7-6 6-3 in the Spain 2 Masters 4 qualifying round on clay. The upset overturned the form book — Oscar Serrano came in leading the head-to-head 4–2. German Puentes narrowed the head-to-head to 4–3.
Puentes G. took it in straight sets.
German Puentes beat Oscar Serrano 7-6(3) 6-3. Umpiry, "German Puentes vs Oscar Serrano — Spain 2 Masters 4 Qualifying Round", https://umpiry.com/match/2000-02-04/puentes-vs-serrano-spain-2-masters-4-qf?utm_source=cite (as of 4 February 2000).