Cape Town - The Springboks will jump from seventh to third in the World Rugby rankings if they beat England in Bloemfontein after Ireland beat the Wallabies in Melbourne on Saturday.
Kick-off at the Toyota Stadium is at 17:05.
The Boks stayed at No 7 despite beating England 42-39 at Ellis Park last Saturday, with Eddie Jones’ team dropping from No 3 to No 4.
However, South Africa will break back into the world’s top three if they take a 2-0 series lead.
These permutations were confirmed by World Rugby CEO Brett Gosper on Twitter.
Top 20 in the current World Rugby rankings:
1. New Zealand 93.99
2. Ireland 88.05
3. Australia 86.56
4. England 85.19
5. Wales 85.13
6. Scotland 83.83
7. South Africa 83.81
8. France 79.10
9. Fiji 77.93
10. Argentina 77.54
11. Japan 76.02
12. Georgia 74.75
13. Tonga 71.08
14. Italy 70.73
15. USA 69.39
16. Samoa 69.03
17. Romania 68.25
18. Uruguay 65.37
19. Russia 63.11
20. Spain 63.09
The @qantaswallabies can take second place off @IrishRugby in @WorldRugby Rankings if they claim a 2-0 series lead this weekend. Either @Springboks or @EnglandRugby could climb to 3rd with a win...if @IrishRugby win. #WorldRugbyRankings
— Brett Gosper (@brettgosper) June 15, 2018