Defending champion David Ferrer of Spain battled his way into the Auckland semifinals as he beat the Colombian Alejandro Falla 6-4 4-6 6-3.
Ferrer will now play Fernando Verdasco, who defeated his compatriot Guillermo Garcia-Lopez 7-5 6-4.
Philipp Kohlschreiber advanced to the semis after overcoming the Spaniard Nicolas Almagro in straight sets 7-6(5) 6-4.
The German will meet Olivier Rochus of Belgium in the semifinal. Rochus dismissed in a hard fought match France’s Benoit Paire6-3 6-7(5) 7-6(4).