Smriti Mandhana's resolute hundred and a disciplined bowling effort, led by spinners Deepti Sharma and Asha Shobana, piloted India to a huge 143-run win over South Africa in the first women's ODI on Sunday. India now lead the three-match series 1-0, and the second game will be played on June 19. Mandhana's sixth ODI century (117, 127 balls , 12x4s, 1x6) formed the fulcrum of India's competitive 265 for eight on a sluggish Chinnaswamy pitch. Then the Indian bowlers worked their magic around the South African batters to bowl out the visitors for 122 as debutante leg-spinner Asha (4/21) led the show with a frugal spell and was well-supported by offie Deepti (2/10).