The world champion Springboks will in all likelihood lose their coveted World Rugby No 1 ranking to their closest rivals, the All Blacks, on Saturday, 30 October.
The Springboks currently top the standings with 91.13 points, just 0.16 ahead of the All Blacks (90.97) heading into the weekend.
While the Springboks will not be in action, the All Blacks will take on Wales in a clash which falls outside of the international window.
Kick-off in Cardiff is at 18:15 SA time.
The All Blacks, who are coming off a 104-14 hiding of the USA in Washington last Saturday, will be at full-strength for the encounter while Wales have been severely hampered by a host of unavailable first-choice players.
A victory by a margin of 1-15 points will see the All Blacks pick up 0.26 points and move to No 1, while a win of 16 or more points will see Ian Foster’s men collect 0.39 points and move even further ahead of the Springboks.
Should Wales do the unthinkable and beat the All Blacks on home soil for the first time since 1953, the Springboks will retain their top spot.
The Springboks won’t be in action until the following weekend when they too take on Wales, before Tests against Scotland and England.
Following their match against Wales, the All Blacks will take on Italy, Ireland and France.
TOP 10 IN WORLD RUGBY RANKINGS AHEAD OF WEEKEND’S TESTS:
1. South Africa – 91.13
2. New Zealand – 90.97
3. Australia – 87.51
4. England – 85.44
5. Ireland – 84.85
6. France – 83.87
7. Scotland – 82.02
8. Argentina – 80.69
9. Wales – 80.59
10. Japan – 78.61