Jan Hajek defeated Jakub Hasek 6-1 6-3 in the Czech Rep F1 round of 16 on clay.
Hajek J. took it in straight sets.
Jan Hajek beat Jakub Hasek 6-1 6-3. Umpiry, "Jan Hajek vs Jakub Hasek — Czech Rep F1 Round of 16", https://umpiry.com/match/2001-05-21/hajek-vs-hasek-czech-rep-f1-r16?utm_source=cite (as of 21 May 2001).