Andrei Levine defeated Zhaoyi Cao 6-3 6-3 in the Turkey F4 qualifying round of 16 on hard. The upset overturned the form book — Zhaoyi Cao came in leading the head-to-head 1–0, but Andrei Levine had been the form player, winning 6 of their last 10 on hard. Andrei Levine claimed a first win over Zhaoyi Cao in two meetings, levelling the head-to-head at 1–1.
Levine A. took it in straight sets.
Andrei Levine beat Zhaoyi Cao 6-3 6-3. Umpiry, "Andrei Levine vs Zhaoyi Cao — Turkey F4 Qualifying Round of 16", https://umpiry.com/match/2013-01-28/cao-vs-levine-turkey-f4-q16?utm_source=cite (as of 28 January 2013).