Fine centuries by Virender Sehwag and Sachin Tendulkar help India to take crucial 46 runs lead in the first innings against South Africa. They scored 342 for 5 at stumps on the second day of the second cricket test at Kolkata today. Sehwag scored 165 while Tendulkar made 106. The duo's association contributed 249 runs for the third wicket from 348 balls. Sehwag stroked his 19th Test hundred and first on this ground in just 87 balls and surpassed his previous best of 88 at Eden. Tendulkar completed his fourth consecutive hundred and second at this venue. He was now three short of 5O centuries in the longest form of the game. Gambhir contributed 25. V.V.S. Laxman and Amit Mishra remained not out with 9 and one respectively. For South Africa Dale Steyn, Morkel, Harris and Duminy claimed one wicket each. Earlier, South Africa were all out for 296 in their first innings. For India Zaheer Khan claimed four wickets while Harbhajan three. The scores so far: South Africa- 296; India- 342 for 5.