New Delhi, Nov. 26 -- A dominant South Africa trounced by India by 408 runs in the second and final Test in Guwahati to complete a thumping 2-0 series sweep.Chasing a target of 549 runs, India were bowled out for 140 in their second innings on Day 5.Ravindra Jadeja offered the sole resistance with an entertaining 54 but no other Indian batter went past the 20-run mark.This is South Africa's first series win in India after a long wait of 25 years.Simon Harmer snared three India wickets in the morning session to put South Africa high in the saddle on Day 5 of the second Test in Guwahati.Skipper Rishabh Pant failed to survive the vagaries of a typical fifth day track as off-spinner Simon Harmer once again turned into India's nightmare, extra...