Juan Pablo Guzman defeated Alex Calatrava 7-6 6-3 in the Amersfoort qualifying round of 16 on clay. The upset overturned the form book — Alex Calatrava came in defending last year's round of 16.
Guzman J. took it in straight sets.
Juan Pablo Guzman beat Alex Calatrava 7-6(5) 6-3. Umpiry, "Juan Pablo Guzman vs Alex Calatrava — Amersfoort Qualifying Round of 16", https://umpiry.com/match/2006-07-17/calatrava-vs-guzman-amersfoort-q16?utm_source=cite (as of 17 July 2006).