Ryusei Makiguchi defeated Sebastian Exequiel Pini 6-4 3-6 6-1 in the Bolivia F5 round of 32 on clay. The upset overturned the form book — Sebastian Exequiel Pini came in leading the head-to-head 1–0. Ryusei Makiguchi claimed a first win over Sebastian Exequiel Pini in two meetings, levelling the head-to-head at 1–1.
Makiguchi R. came through in three sets.
Ryusei Makiguchi beat Sebastian Exequiel Pini 6-4 3-6 6-1. Umpiry, "Ryusei Makiguchi vs Sebastian Exequiel Pini — Bolivia F5 Round of 32", https://umpiry.com/match/2013-10-07/makiguchi-vs-pini-bolivia-f5-r32?utm_source=cite (as of 7 October 2013).