Frederico Gil defeated Joao Monteiro 6-4 6-2 in the Portugal F19 semi-final on hard. The upset overturned the form book — Joao Monteiro came in leading the head-to-head 2–0, but Frederico Gil had been the form player, winning 2 of their last 4 on hard. Frederico Gil claimed a first win over Joao Monteiro in three meetings, narrowing the head-to-head to 2–1.
Gil F. took it in straight sets.
Frederico Gil beat Joao Monteiro 6-4 6-2. Umpiry, "Frederico Gil vs Joao Monteiro — Portugal F19 Semi-final", https://umpiry.com/match/2017-09-18/gil-vs-monteiro-portugal-f19-sf?utm_source=cite (as of 18 September 2017).