Younis, who named an unchanged side, chose to bowl because of the dew - for which a chemical ASAP-80 has been sprayed on the out-field.
The Kiwis make two changes - with Peter Fulton replacing Hamish Marshall who is unwell, while seamer James Franklin is preferred to spinner Jeetan Patel.
The winners of this game will be the first team to book the semi-finals berth.
Gul strikes for Pak: Pak swing bowler Umar Gul delivered early blow for Kiwis when he rattled the timber of struggling Lou Vincent (3). Kiwis were 4/1 in 2 overs with skipper Fleming (0) and seasoned campaigner Nathan Astle (0) were at the crease.
New Zealand: Stephen Fleming (Capt), Lou Vincent, Nathan Astle, Peter Fulton, Scott Styris, Jacob Oram, Brendon McCullum (wk), Daniel Vettori, James Franklin, Kyle Mills and Shane Bond.
Pakistan: Imran Farhat, Mohammad Hafeez, Younis Khan (Capt), Mohammad Yousuf, Shoaib Malik, Abdul Razzaq, Kamran Akmal (wk), Shahid Afridi, Rana Naved-ul-Hasan, Rao Iftikhar Anjum and Umar Gul.
Umpires: Mark Benson (ENG) and Rudi Koertzen (RSA)
TV umpire: Billy Bowden (NZL)
Match Referee: Ranjan Madugalle (SRI)