Guillermo Olaso defeated Andrzej Mach 4-6 6-1 6-4 in the Poland F1 round of 16 on clay.
Olaso G. came through in three sets.
Guillermo Olaso beat Andrzej Mach 4-6 6-1 6-4. Umpiry, "Guillermo Olaso vs Andrzej Mach — Poland F1 Round of 16", https://umpiry.com/match/2008-05-12/mach-vs-olaso-poland-f1-r16?utm_source=cite (as of 12 May 2008).