The Black Caps selectors have seriously overhauled their test and Twenty20 squads for South Africa on the back of the captaincy shakeup.
Within hours of confirming Brendon McCullum as the new skipper to take over from Ross Taylor, the selectors revealed new-look squads from those which recently toured Sri Lanka.
Peter Fulton and Dean Brownlie return to the test squad, clearly eyed as batting alternatives for Taylor who has refused to tour South Africa in the wake of his axing as captain.
Spinner Todd Astle's promising debut in Sri Lanka has amounted to nothing with Auckland left-armer Bruce Martin preferred in a recall.
And Kruger van Wyk has lost the wicket-keeping gloves to the versatile BJ Watling.
"We felt that it was necessary to make a few changes," Hesson said of his test squad who are coming off a win over Sri Lanka.
"We don't require a leg-spin option in South African conditions so have left out Todd Astle but he is very much part of our thinking for the future.
"Bruce Martin is a specialist spinner who can bowl a lot of overs and he deserves an opportunity after showing good recent form.
"Following on from BJ Watling's good form in Sri Lanka and again while back in New Zealand, he has been selected as the test wicketkeeper."
The selectors have had a clean out of the T20 squad where the unheralded Corey Anderson, Jimmy Neesham, Colin Munro, Derek de Boorder and Mitchell McClenaghan all get reward for some good form for their provinces.
Fulton is also in the T20 mix.
Tom Latham, Andrew Ellis and Kyle Mills are casualties from the Sri Lankan T20 match.
Selector Kim Littlejohn said Tim Southee and Jacob Oram weren't considered for the T20s because of the impending arrival of babies.
"The squad had a mix of experienced performers and young players who are not yet experienced at international level," Littlejohn said.
"The more experienced players will play a significant role as we face the challenge of playing a very strong South African side in their own conditions."
Twenty20 squad: Brendon McCullum (c), Corey Anderson, Trent Boult, Doug Bracewell, Derek de Boorder, James Franklin, Peter Fulton, Martin Guptill, Ronnie Hira, Nathan McCullum, Mitchell McClenaghan, Adam Milne, Colin Munro, Jimmy Neesham, Rob Nicol.
Test squad: Brendon McCullum (c), Trent Boult, Doug Bracewell, Dean Brownlie, Daniel Flynn, James Franklin, Peter Fulton, Martin Guptill, Chris Martin, Bruce Martin, Jeetan Patel, Kane Williamson, Tim Southee, Neil Wagner, BJ Watling.
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