Ramkumar Ramanathan defeated Stefan Kozlov 6-3 6-2 in the Delray Beach qualifying round of 16 on hard. The upset overturned the form book — Stefan Kozlov came in leading the head-to-head 1–0, defending last year's round of 32. Ramkumar Ramanathan claimed a first win over Stefan Kozlov in two meetings, levelling the head-to-head at 1–1.
Ramanathan R. took it in straight sets.
Ramanathan R. and Kozlov S. faced 1 of the same opponent in the last 12 months. Ramanathan R. went 0–1 (0%) against them, Kozlov S. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Hard: Ramanathan R. leads 1–0 · Clay: Kozlov S. leads 1–0
Ramkumar Ramanathan beat Stefan Kozlov 6-3 6-2. Umpiry, "Ramkumar Ramanathan vs Stefan Kozlov — Delray Beach Qualifying Round of 16", https://umpiry.com/match/2018-02-17/kozlov-vs-ramanathan-delray-beach-q16?utm_source=cite (as of 17 February 2018).