Kuala Lumpur - Jarkko Nieminen of Finland has upset third-seeded Leonardo Mayer of Argentina 7-6 (5), 6-4 to advance to the quarter-finals of the Malaysian Open on Thursday.
The 33-year-old Nieminen won without facing a break point and will next face seventh-seeded Pablo Andujar of Spain, who beat Michal Przysiezny of Poland 6-4, 6-7 (6), 6-3.
The 28-year-old Andujar is bidding to win his second ATP World Tour title of the season after victory on clay in Gstaad.
Benjamin Becker of Germany defeated Pierre-Hugues Herbert 6-4, 7-6 (4) in 84 minutes.
Becker, who upset defending champion Joao Sousa in the first round, will play second-seeded Ernests Gulbis of Latvia, who outlasted German qualifier Philipp Petzschner 6-3, 6-7 (3), 6-1.
Results from day four of the Malaysian Open in Kuala Lumpur on Thursday (x denotes seeded players):
Jamie Murray/John Peers (GBR/AUS x2) bt Nick Kyrgios/Syed Mohamad Agil (AUS/MAS) 6-3, 6-4
Ernests Gulbis (LAT x2) bt Philipp Petzschner (GER) 6-3, 6-7 (3-7), 6-1
Jarkko Nieminen (FIN) bt Leonardo Mayer (ARG x3) 7-6 (7/5), 6-4
Benjamin Becker (GER) bt Pierre-Hugues Herbert (FRA) 6-4, 7-6 (7/4)
Pablo Andujar (ESP x7) bt Michal Przysiezny (POL) 6-4, 6-7 (6/8), 6-3
Leonardo Mayer/Joao Sousa (ARG/POR) bt Daniele Bracciali/Oliver Marach (ITA/AUT) 7-6 (7/5), 6-3
Andre Begemann/Julian Knowle (GER/AUT) bt Scott Lipsky/Rajeev Ram (USA/USA) 6-3, 6-3