Martin Klizan defeated Joao Sousa 6-2 7-5 6-7 6-1 in the SVK vs POR round robin on hard. The upset overturned the form book — Joao Sousa came in leading the head-to-head 1–0. Martin Klizan claimed a first win over Joao Sousa in two meetings, levelling the head-to-head at 1–1.
Klizan M. came through in four sets.
Hard: Klizan M. leads 1–0 · Clay: Sousa J. leads 1–0
Martin Klizan beat Joao Sousa 6-2 7-5 6-7 6-1. Umpiry, "Martin Klizan vs Joao Sousa — SVK vs POR Round Robin", https://umpiry.com/match/2012-09-14/klizan-vs-sousa-svk-vs-por-rr?utm_source=cite (as of 14 September 2012).