India gave a good account of their enormous depth as a young and inexperienced side stunned a strong South Africa unit by seven wickets in third ODI here on Tuesday to secure a memorable series win. The spin trio of Washington Sundar (2/15), Shahbaz Ahmed (2/32) and Kuldeep Yadav (4/18) picked the right lengths on a slow Kotla pitch to bundle out South Africa for 99, the Proteas lowest ODI total against India.