Mateusz Kowalczyk advanced past Dovydas Sakinis via walkover in the Poland F1 round of 16.
Kowalczyk M. advanced on a walkover.
Mateusz Kowalczyk advanced when Dovydas Sakinis withdrew. Umpiry, "Mateusz Kowalczyk vs Dovydas Sakinis — Poland F1 Round of 16", https://umpiry.com/match/2012-05-21/kowalczyk-vs-sakinis-poland-f1-r16?utm_source=cite (as of 21 May 2012).