Hamburg - Top-seed Nicolas Almagro beat Nikolay Davydenko 6-4, 6-3 to reach the German Tennis Championships quarter-finals on Thursday.
Third-seeded Juan Monaco of Argentina beat Daniel Munoz-De La Nava of Spain 7-6 (7/4), 6-3.
No 6 Philipp Kohlschreiber swept past Fabio Fognini of Italy 7-5, 6-2 and Jeremy Chardy of France edged Julian Reister of Germany 7-5, 6-4.
In the quarter-finals, Almagro plays Kohlschreiber, Monaco meets Chardy, Marin Cilic faces Albert Ramos, and Florian Mayer goes against Tommy Haas.