Sport | Proteas using nervous energy as a positive ahead of World Cup semi against giant-killers Afghanistan
![Sport | Proteas using nervous energy as a positive ahead of World Cup semi against giant-killers Afghanistan](https://cdn.24.co.za/files/Cms/General/d/11956/1d469c9f75c7459d826f4ca772e5cb36.jpg)
Confronting nerves against an unknown knockout quantity like Afghanistan is everything for the Proteas and their captain, Aiden Markram, ahead of Thursday's T20 World Cup semi-final in Tarouba.