In the World T-20, West Indies defeated South Africa by 3 wickets to reach the semifinals from Group-1. In a crucial fixture played at Nagpur last night, the Caribbean nation chased down the target of 123 with two balls to spare.AIR correspondent reports, with wild celebrations and charming smile on their faces, the West Indian team last night paved its way for the semifinals from Group-1.They have now joined New Zealand the only other team to be in the semifinals yet.This format is mostly dominated by batsman but Nagpur pitch had more to offer to bowlers.In a low scoring contest the match went down the wire as chasing a sub par total by Twenty-20 standards the Caribbean were made to work hard for the win.The '2012, T-20 Champions' had a strong start given by their opener Johnson Charles but economical bowling by Proteas tried to make up for their misfired battting line up and gave them hope.In 17th over, Imran Tahir took 2 wickets and rocked the match to his side as West Indies read 100 for 6.The crucial game, came into balance as 20 runs were required in last 2 overs.But Marlon samules struck some meaty blow in the next over before getting out releasing pressure and Carlos Brathwaite struck six to end the chase with 123 for 7 in 19.4 overs.Earlier, South Africa managed to put up 122 runs for the loss of 8 wickets in stipulated 20 overs after initial struggle.With this loss Proteas chances to advance in the World Cup is hanging by thread and they could exit the tournament even before playing their final group match.Their hope is now pinned on today's encounter between England & Sri Lanka, as they wish Islanders to beat the English side to stay afloat in the tournament.Today, England will take on Sri Lanka from Group-1 at Delhi while Bangladesh will face New Zealand at Kolkata in Group-2 encounter.In the Women's T-20, Australia will take on Ireland as New Zealand will face South Africa in a group match.