Mikhail Kukushkin defeated Jan Hajek 6-4 6-7 7-6 6-0 in the CZE vs KAZ round robin on hard.
Kukushkin M. came through in four sets.
Kukushkin M. and Hajek J. faced 1 of the same opponent in the last 12 months. Kukushkin M. went 1–1 (50%) against them, Hajek J. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Mikhail Kukushkin beat Jan Hajek 6-4 6-7 7-6 6-0. Umpiry, "Mikhail Kukushkin vs Jan Hajek — CZE vs KAZ Round Robin", https://umpiry.com/match/2011-03-04/hajek-vs-kukushkin-cze-vs-kaz-rr?utm_source=cite (as of 4 March 2011).