Qualifier Jan Koukal, the Czech number one, forced his way into the quarter-finals of the Hector Companion Czech Open Squash Championship in the Czech Republic capital Prague when he upset seventh-seeded Frenchman Yann Perrin 11-10 11-7 11-5.
The 22-year-old from Prague now goes on to meet Sweden's Badr Abdel Aziz after the No2 seed beat Egypt's Mohamed Elkeiy 11-4 11-4 11-10 at the Sport Centre & Hotel Hector.
Canadian favourite Sabir Butt beat English qualifier Philip Nightingale 11-8 9-11 11-10 11-4 to set up a quarter-final clash with France's eighth seed Fabien Verseille.
RESULTS: Hector Companion Czech Open Squash Championship, Prague, Czech Republic
1st round:
[1] Sabir Butt (CAN) bt [Q] Philip Nightingale (ENG) 11-8, 9-11, 11-10 (5-3), 11-4
[8] Fabien Verseille (FRA) bt Brian Byrne (IRL) 11-7, 11-7, 11-9
[3] Andras Torok (HUN) bt Aqeel Rehman (AUT) 11-10 (2-0), 11-5, 11-2
[5] David Barnett (ENG) bt Robbie Temple (ENG) 11-5, 11-10 (6-4), 5-11, 11-10 (2-0)
[Q] Shaun le Roux (ENG) bt [6] Romain Tenant (FRA) 11-7, 11-8, 10-11 (0-2), 11-10 (2-0)
[4] Andreas Fuchs (AUT) bt [Q] Stuart Crawford (SCO) 11-9, 11-6, 5-11, 11-10 (2-0)
[Q] Jan Koukal (CZE) bt [7] Yann Perrin (FRA) 11-10 (2-0), 11-7, 11-5
[2] Badr Abdel Aziz (SWE) bt Mohamed Elkeiy (EGY) 11-4, 11-4, 11-10 (4-2)