Varun keeping things tight as Jansen struggles to pick him. After Brevis takes a single first ball, Jansen plays three dots in a row.
It's all or nothing from Jansen as he pulls the spinner over midwicket for a six, to take his score to 12 with two sixes.
Varun gets revenge off the very next ball as Jansen swings hard but misses the wrong one which skids straight on and strikes the stumps.
Jansen is dismissed for 12 as South Africa collapse to 68/6 after 10 overs. They need another 108 from the remaining 10 overs for victory.
Brevis, who has stroked 22 from 12 balls, is their last hope as South Africa struggle on a two-paced pitch.