The New Zealand cricket captain is excited by the aggression shown by Colin Munro who has earnt a test debut.
Munro will play in the second and final test against South Africa, which starts tonight in Port Elizabeth, as a replacement for the injured all rounder James Franklin, who's succumbed to a hamstring strain.
The Black Caps skipper Brendon McCullum says he likes Munro's approach and attitude.
Meanwhile South African born Neil Wagner has replaced veteran Chris Martin in the New Zealand 12.
McCullum says Wagner's aggression in the nets during the week has been rewarded with the call up and believes he's a better fit for Port Elizabeth.
Wagner will also replace the injured Adam Milne in the New Zealand one day squad for their upcoming series in South Africa.