Issei Okamura defeated Ryota Tanuma 6-3 7-6 in the China F13 semi-final on clay. The upset overturned the form book — Ryota Tanuma came in leading the head-to-head 2–1. That levelled the head-to-head at 2–2.
Okamura I. took it in straight sets.
Clay: Tanuma R. leads 2–1 · Hard: Okamura I. leads 1–0
Issei Okamura beat Ryota Tanuma 6-3 7-6(5). Umpiry, "Issei Okamura vs Ryota Tanuma — China F13 Semi-final", https://umpiry.com/match/2016-07-18/okamura-vs-tanuma-china-f13-sf?utm_source=cite (as of 18 July 2016).