Steven Diez defeated Mateusz Kowalczyk 6-2 6-2 in the Poland F1 qualifying round on clay.
Diez S. took it in straight sets.
Steven Diez beat Mateusz Kowalczyk 6-2 6-2. Umpiry, "Steven Diez vs Mateusz Kowalczyk — Poland F1 Qualifying Round", https://umpiry.com/match/2012-05-21/diez-vs-kowalczyk-poland-f1-qf?utm_source=cite (as of 21 May 2012).