Two highly important matches would be played in Super Eight phase of Twenty20 World Cup at Gros Islet on Tuesday. First face-off is set between India and Sri Lanka and in the second one, Australia will clash with West Indies. Todays matches are crucial for Sri Lanka, India and West Indies, as Australia is all but through to the semi-finals of the ICC World T20 semi-finals, having won two games in the Super Eight stage against India and Sri Lanka. What makes it even more interesting is that the side has won both the games with huge margins and that means that there is not much that can be done to stop them. On the other hand, Sri Lanka needs to beat India to qualify for the semi-finals, especially given that West Indies would not only have to beat the Aussies in the last game but also by a good margin at that; something that looks almost impossible at this stage. However, if Sri Lanka loses to India, they would need to first ensure that they lose by less than 20 runs or with less than 15 balls to spare. This way they would maintain their net run-rate over India. They, then have to hope that West Indies lose to Australia. India not only needed to beat Sri Lanka, but also by a margin of 21 runs or more and then hope that Australia beats West Indies. The other semifinalists will be decided today. West Indies, Sri Lanka and India will need a victory and some permutations and combination on net run rate to qualify for the semis.