Dmitry Popko defeated Kirill Dmitriev 6-1 7-5 in the Turkey F8 round of 32 on hard. The upset overturned the form book — Kirill Dmitriev came in leading the head-to-head 3–2. That levelled the head-to-head at 3–3.
Popko D. took it in straight sets.
Hard: Popko D. leads 2–0 · Clay: Dmitriev K. leads 3–1
Dmitry Popko beat Kirill Dmitriev 6-1 7-5. Umpiry, "Dmitry Popko vs Kirill Dmitriev — Turkey F8 Round of 32", https://umpiry.com/match/2017-02-27/dmitriev-vs-popko-turkey-f8-r32?utm_source=cite (as of 27 February 2017).