15 Number of consecutive Tests New Zealand have gone without a win against South Africa. Their last win had come in Auckland in 2003-04. Since then New Zealand have lost ten matches and drawn five against South Africa. Should the hosts win this Test, it will be only their third win in 28 matches against South Africa since the latter's readmission to Tests.
127 The lowest target defended successfully in the fourth innings at Seddon Park. The home team had been bowled out by Pakistan for 93 in the fourth innings on that occasion. Apart from that instance though, in the other five instances when teams have successfully defended targets at this venue, the targets have been 300 or more. Teams have been bowled out in the fourth innings at this venue six times. Only two of those have been scores less than 150 runs.
170 New Zealand's previous highest individual score at home in Tests against South Africa - by Scott Styris in Auckland in 2003-04. Kane Williamson's 176 in this Test bettered that.
5 Number of 150-plus scores by Kane Williamson in Tests; among New Zealand batsmen, only Brendon McCullum has made more. Stephen Fleming and Ross Taylor have 4 each.
4 Number of times a New Zealand Test innings against South Africa has lasted more deliveries than the 162.1 overs played by the hosts in their first innings. Only two of these instances have come since South Africa's readmission to Tests.
3 First-innings lead bigger than 175 runs taken by New Zealand in Tests against South Africa. The last time New Zealand took a higher lead was in Auckland in 2003-04 when the led by 299 runs at the end of the first innings.
2003-04 The last time New Zealand had four or more fifty-plus scores in a Test innings against South Africa, which was in the Auckland Test. Overall, this is only the sixth time that New Zealand have had four or more of their batsmen getting fifty-plus scores in an innings in Tests against South Africa.
2012 The last time three South African pacers have had to bowled 30 or more overs each in a Test innings. Dale Steyn, Vernon Philander and Morne Morkel had sent down 30, 30 and 31 overs respectively in Australia's first innings at the Gabba. Philander, Morkel and Kagiso Rabada clocked in more than 30 overs each in New Zealand's first innings in this Test.
71.4 Number of wicket-less overs bowled by Philander since his last wicket in this series - Jeetan Patel in the Dunedin Test. Before this series, Philander had taken 32 wickets at just 15.53 in six matches against New Zealand. He has two wickets in this series at an average of 101.50.
5 Number of away Test series Hashim Amla has now gone without making a hundred. His last hundred outside South Africa came in Colombo in 2014 when he made an unbeaten 139. Since that match, Amla has made only 389 runs in 20 innings at an average of 20.55. In a period of five years up until the Colombo Test in 2014, Amla had made 2249 runs at 77.55 with ten hundreds and five fifties in 19 away Tests.
Shiva Jayaraman is a senior stats analyst at ESPNcricinfo.com. @shiva_cricinfo