Jan Hajek defeated Kei Nishikori 6-3 6-1 in the Memphis qualifying round on hard. The upset overturned the form book — Kei Nishikori came in leading the head-to-head 1–0, but Jan Hajek had been the form player, winning 6 of their last 9 on hard. Jan Hajek claimed a first win over Kei Nishikori in two meetings, levelling the head-to-head at 1–1.
Hajek J. took it in straight sets.
Hajek J. and Nishikori K. faced 1 of the same opponent in the last 12 months. Hajek J. went 1–0 (100%) against them, Nishikori K. 1–0 (100%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Jan Hajek beat Kei Nishikori 6-3 6-1. Umpiry, "Jan Hajek vs Kei Nishikori — Memphis Qualifying Round", https://umpiry.com/match/2011-02-13/hajek-vs-nishikori-memphis-qf?utm_source=cite (as of 13 February 2011).