NAGPUR: West Indies bowlers restricted South Africa to 122 for eight wickets after captain Darren Sammy won the toss and opted to field in their World Twenty20 Super 10 match on Friday. The Caribbean side, who need a win to guarantee a place in the last four, responded brilliantly to their captain's call to put South Africa in on a pitch offering assistance for the slow bowlers. Opener Quinton de Kock (47) played a disciplined knock to prop up his team's innings after the South Africans were reduced to 47 for five in the ninth over. De Kock added 50 for sixth wicket with David Wiese (28) to give South Africa some sort of a total to defend. Chris Gayle, Andre Russell and Dwayne Bravo picked up two wickets apiece for the 2012 champions, who retained the same side that beat Sri Lanka in their last match in Bangalore. The Proteas, one of the pre-tournament favourites to win their maiden World Twenty20 title, lost their opening match against England in batting-friendly conditions in Mumbai before beating Afghanistan at the same venue. They added an extra spinner to the team that beat Afghanistan in their last Group One match, bringing in Aaron Phangiso for paceman Kyle Abbott while Rilee Rossouw came in for injured all-rounder JP Duminy.