Steven Diez defeated Attila Balazs 7-5 7-6 in the Poland F1 semi-final on clay.
Diez S. took it in straight sets.
Steven Diez beat Attila Balazs 7-5 7-6(3). Umpiry, "Steven Diez vs Attila Balazs — Poland F1 Semi-final", https://umpiry.com/match/2012-05-21/balazs-vs-diez-poland-f1-sf?utm_source=cite (as of 21 May 2012).