India outshone started their home series on a glorious note as they outclassed South Africa by 203 runs in the first affair of the three-match rubber in Visakhapatnam on Sunday.
The victory consolidated India's position in the ongoing World Test Championship with another valuable 40 points added to their kitty.
India maintain their lead with 160 points.
Chasing an improbable 395-run target, South Africa were expected to put up a fight like they did in the first innings but Mohammad Shami scalped a five-wicket haul while Ravindra Jadeja picked up four wickets as India thrashed Proteas on the fifth and final day of the opening Test to seal a 1-0 lead in the three-match series.
Chasing a target of 395 runs to win, South Africa were bundled out for 191. Dane Piedt was the highest scorer for South Africa in the second innings with 56 runs.
Earlier on Saturday, Rohit Sharma underlined his credentials as a Test opener with a second consecutive hundred as India set South Africa a target of 395 at stumps on Day 4 of the first Test at the ACA-VDCA Stadium.
At close of play, the Proteas were 11/1 in their second innings with last innings's centurion Dean Elgar trapped in front by Ravindra Jadeja for just two and Aiden Markram (3 batting) at the crease with Theunis de Bruyn (5 batting).
Rohit built on his 176 in the first essay in spectacular fashion as he struck 127 from 149 balls, his innings studded with 10 fours and a whopping seven sixes to add to his six in the first dig, as he became the batsman to hit the most number of maximums in the longest format of the game.
Cheteshwar Pujara gave him good company with an aggressive 81 off 148 deliveries (13x4, 2x6) before Vernon Philander trapped him.
The pair added 169 for the first wicket as India declared on 323/4 with skipper Virat Kohli (31 not out) and his deputy Ajinkya Rahane (27 not out) batting.
Resuming the day at 385/8, South Africa were bowled out for 431 with ace off-spinner Ravichandran Ashwin picking up a seven-wicket haul.
It was a Rohit and Pujara show from there on as the pair paced their innings well keeping India's declaration in mind. The second Test of the three-match series will be played in Pune from October 10.
1-0 ????????????????????????#TeamIndia win the 1st Test in Vizag by 203 runs #INDvSA @Paytm pic.twitter.com/iFvuKOXPOJ
— BCCI (@BCCI) October 6, 2019