Mateusz Kowalczyk advanced when Janez Semrajc retired 7-6 4-0 in the Poland F4 round of 32.
Kowalczyk M. advanced when Semrajc J. retired.
Mateusz Kowalczyk beat Janez Semrajc 7-6(3) 4-0 after Janez Semrajc retired. Umpiry, "Mateusz Kowalczyk vs Janez Semrajc — Poland F4 Round of 32", https://umpiry.com/match/2011-06-06/kowalczyk-vs-semrajc-poland-f4-r32?utm_source=cite (as of 6 June 2011).