West Indies won the toss and elected to field first against Sri Lanka in the second semi-final of ICC Twenty20 World Cup. Sri Lanka and West Indies have played each other before in the tournament, in a dead game after both teams had qualified from the group of death. Gayle missed that match with a knee injury and West Indies lost, but not by much. Jayasuriya and Dilshan were scintillating in that contest and Sri Lanka will rely on them once again to provide early momentum. West Indies are confident of chasing nearly any total in this event; Sri Lanka believe there is no score they can't defend. Clearly, something will have to give in their World Twenty20 semi-final. Friday's match at the Oval sees two exciting sides up against one another and, while Sri Lanka will start favourites, the West Indies have shown that they are not to under-estimated. Sri Lanka, who have an admirably well balanced side for cricket's shortest format, have yet to lose a match at this tournament.