<p class="title">Opener Quinton de Kock passed the half-century mark for the eighth time in nine innings across all formats to lift South Africa to a comfortable six-wicket victory over Sri Lanka in the fourth ODI at St George's Park on Wednesday.</p>.<p class="bodytext">The home side chased down their modest target of 190 in 32.5 overs after winning the toss and electing to field, securing a 4-0 lead in the five-match series with the final fixture to be played in Cape Town on Saturday.</p>.<p class="bodytext">De Kock followed up his century in the previous game with 51 from 57 balls as he blasted South Africa to a fast start in pursuit of the win.</p>.<p class="bodytext">Captain Faf du Plessis chipped in with 43 and JP Duminy showed form after his return from long-term injury with 31 not out.</p>.<p class="bodytext">Sri Lanka were bowled out for 189 in 39.2 overs, their innings rescued to some extent by an extraordinary 58-run final wicket stand between Isuru Udana (78 from 57 balls) and Kasun Rajitha (0).</p>.<p class="bodytext">The pair came together with the score on 131 as Udana powered his way to the highest List A score of his career with seven fours and four sixes before he was finally caught by Du Plessis off all-rounder Andile Phehlukwayo (2-21).</p>.<p class="bodytext">Fast bowler Anrich Nortje (3-57) was the pick of the home attack, though he suffered in the late onslaught from Udana.</p>.<p class="bodytext">South Africa may be concerned at their inability to close out the innings, a feature of their cricket in recent times, with the World Cup starting in a few months.</p>
<p class="title">Opener Quinton de Kock passed the half-century mark for the eighth time in nine innings across all formats to lift South Africa to a comfortable six-wicket victory over Sri Lanka in the fourth ODI at St George's Park on Wednesday.</p>.<p class="bodytext">The home side chased down their modest target of 190 in 32.5 overs after winning the toss and electing to field, securing a 4-0 lead in the five-match series with the final fixture to be played in Cape Town on Saturday.</p>.<p class="bodytext">De Kock followed up his century in the previous game with 51 from 57 balls as he blasted South Africa to a fast start in pursuit of the win.</p>.<p class="bodytext">Captain Faf du Plessis chipped in with 43 and JP Duminy showed form after his return from long-term injury with 31 not out.</p>.<p class="bodytext">Sri Lanka were bowled out for 189 in 39.2 overs, their innings rescued to some extent by an extraordinary 58-run final wicket stand between Isuru Udana (78 from 57 balls) and Kasun Rajitha (0).</p>.<p class="bodytext">The pair came together with the score on 131 as Udana powered his way to the highest List A score of his career with seven fours and four sixes before he was finally caught by Du Plessis off all-rounder Andile Phehlukwayo (2-21).</p>.<p class="bodytext">Fast bowler Anrich Nortje (3-57) was the pick of the home attack, though he suffered in the late onslaught from Udana.</p>.<p class="bodytext">South Africa may be concerned at their inability to close out the innings, a feature of their cricket in recent times, with the World Cup starting in a few months.</p>