Second seed John Isner was upset by fellow American and seventh seed Steve Johnson in their quarter-final. Johnson will play another American, Jack Sock in the semi-final. The fourth seed defeated Jeremy Chardy in the quarter-final.
Eighth seed Marcos Baghdatis also reached the semi-final with a win over Jiri Vesely. The Cypriot will play Joao Sousa in the second-last match. The Portuguese player defeated Robin Haase in the quarter-final. ATP Auckland Quarter-finals Joao Sousa (POR) def.
Robin Haase (NED) 6-3, 6-2
 Marcos Baghdatis (CYP) def. Jiri Vesely (CZE) 6-2, 6-4
 Jack Sock (USA) def. Jeremy Chardy (FRA) 5-7, 6-4, 6-3
 Steve Johnson (USA)  John Isner (USA) 6-3, 5-7, 7-6