India defeated South Africa by 11 runs in the third T20I at Centurion, taking a 2-1 lead in the four-match series. Batting first, India posted 219/6, with Tilak Varma smashing a brilliant maiden T20I century (107 off 56 balls). Despite a valiant effort from South Africa, who reached 208/7, India held their ground to secure the win and maintain their series advantage.