Dominik Koepfer defeated Rhyne Williams 2-6 6-0 6-1 in the USA F9 round of 16 on clay. The upset overturned the form book — Rhyne Williams came in leading the head-to-head 2–1. That levelled the head-to-head at 2–2.
Koepfer D. came through in three sets.
Clay: Koepfer D. leads 1–0 · Hard: Williams R. leads 2–1
Dominik Koepfer beat Rhyne Williams 2-6 6-0 6-1. Umpiry, "Dominik Koepfer vs Rhyne Williams — USA F9 Round of 16", https://umpiry.com/match/2017-02-27/koepfer-vs-williams-usa-f9-r16?utm_source=cite (as of 27 February 2017).