Germany’s Dustin Brown caused an upset by defeating French third seed Gilles Simon in the second round of the Montpellier International on Thursday.
The unseeded Brown took 66 minutes to cruise past Simon 6-4, 6-4, who had no answer to his opponent’s fine serving display.
The German served 10 aces, winning 83 percent of the points played on his first serve.
Brown will next be up against Belgian Ruben Bemelmans in the quarter-finals after he got past Jan-Lennard Struff of Germany 6-4, 6-7 (5), 6-3 in two hours and 10 minutes.
In another upset, Paul-Henri Mathieu of France beat fourth-seeded countryman Benoit Paire 6-3, 6-3 to set up a quarter-final clash against the winner of the match between Frenchman Édouard Roger-Vasselin and John Millman of Australia.