Dmitry Popko defeated Roman Safiullin 6-2 6-3 in the Kazakhstan F7 round of 16 on clay. The upset overturned the form book — Roman Safiullin came in ranked #79, leading the head-to-head 1–0. Dmitry Popko claimed a first win over Roman Safiullin in two meetings, levelling the head-to-head at 1–1.
Popko D. took it in straight sets.
Clay: Popko D. leads 1–0 · Hard: Safiullin R. leads 1–0
Dmitry Popko beat Roman Safiullin 6-2 6-3. Umpiry, "Dmitry Popko vs Roman Safiullin — Kazakhstan F7 Round of 16", https://umpiry.com/match/2017-09-25/popko-vs-safiullin-kazakhstan-f7-r16?utm_source=cite (as of 25 September 2017).