Imad, who bowled two overs in the Powerplay, is back into the attack. He does well to concede just three runs in his third over with the field spread around.
Leg-spinner Shadab Khan comes into the attack. The first ball is a googly as Mitchell fails to read and is struck on the pads but the leg before shout is turned down.
Williamson then hits a full toss to the fielder in the covers before he flicks the fourth ball through midwicket for two runs.
He keeps out the last two balls as Shadab makes a tidy start, giving away just three runs in his first over.
Mitchell breaks the shackles as he chips down the track and lofts Imad straight down the ground for a six over long-off.
However, the spinner gets revenge next ball. Mitchell lofts the next ball again back over the bowler's head but this time he holes out to the fielder at long-on to perish for 27.
Pakistan chipping away at the wickets as New Zealand are reduced to 56/2 in nine overs.