Mattias Pennonen defeated Ville Liukko 6-0 6-1 in the Finland 3 round of 16 on clay. The upset overturned the form book — Ville Liukko came in leading the head-to-head 1–0. Mattias Pennonen claimed a first win over Ville Liukko in two meetings, levelling the head-to-head at 1–1.
Pennonen M. took it in straight sets.
Mattias Pennonen beat Ville Liukko 6-0 6-1. Umpiry, "Mattias Pennonen vs Ville Liukko — Finland 3 Round of 16", https://umpiry.com/match/2001-05-28/liukko-vs-pennonen-finland-3-r16?utm_source=cite (as of 28 May 2001).