Five players ranked inside the world's top 20 will contest the Heineken Open in January.
The full field, which includes a four-time Open champion, will have a cut-off of 65.
Joining the already announced world No 3, David Ferrer, are Tommy Haas (12), John Isner (14), Philipp Kohlschreiber (22), Benoit Paire (26) and a wildcard entry from Marcos Baghdatis (87).
It will be Baghdatis' Open debut. The Cypriot, a Junior Grand Slam winner and finalist at the Australian Open in 2006, has a loyal fan base around the world due to his high-energy and passionate personality.
Kohlschreiber returns in an attempt to go one better after his appearance in the final again in 2013 where he lost narrowly to Ferrer.
Also joining the field are Kevin Anderson (20), Gael Monfils (31) and Spanish ace Tommy Robredo (18).
Robredo, who has featured at the tournament on three previous occasions, joins the field after a year which saw him reach the quarter-finals of the French and US Opens, as well as the third round at Wimbledon.
His quarter-final result at the French Open showcased his steely determination, making history when he became the first man since Henri Cochet in 1927 to win three consecutive Grand Slam matches from two sets to love down.
"To have a field featuring five players in the world's top 20 is an outstanding success," said tournament director Karl Budge.
"The addition of Marcos Baghdatis joining Frenchman Gael Monfils means we will have two of the best entertainers in world tennis headlining our Monday and Tuesday sessions."
The Open runs from January 6-11 at the ASB Tennis Arena in Auckland.