Stafanie Taylor and Shemaine Campbelle shared a 117-run partnership for the second wicket, setting up a 177-run chase that allowed the hosts to square the series with a two-all draw.
Taylor was once again the in-form player, scoring 76 off 107 balls to help her side to a competitive 177/8 in their 50 overs after they were asked to bat first by the visitors. Campbelle also provided a damaging 47-run contribution before her innings was halted by Chloe Tryon (2/28).
Apart from Tryon, the only other bowler to take a significant number of scalps was leading wicket taker, Dané van Niekerk, who took a crucial 3/31 while the rest of the attack found it difficult to penetrate the obstinate Taylor-Campbelle partnership, and West Indian line up in general.
The batters were good at forming consistent and useful partnerships throughout the innings to get their end result.
In reply, South Africa once again lost two wickets in moderately quick succession.
Trisha Chetty (9) failed to score runs as Taylor (1/26) struck with the ball, ending her 22-run opening partnership with SA new cap Savannah Cordes in the first ball of the sixth over. Cordes followed 12 balls later, run out for 11 off the bowling of Shaquana Quintyne (2/34).
Captain, Mignon du Preez (25) and Marizanne Kapp (40) put up a good fight, sharing a 43-run partnership before Quintyne had du Preez trapped lbw in the 18th over. Cri-Zelda Brits added 35 essential runs before she was run out, by Windies captain, Merissa Aguillera.
The rest of the middle order and tail were not given the opportunity to contribute much towards their team’s bottom-line as the hosts kept the pressure up.
The only exception was number eight batter, Tryon, who managed 14 runs before Campbelle and Taylor formed another partnership to remove her, leaving South Africa on 142/8 after 42.3 overs.
Two ducks from Sunette Loubser and Dinesha Devnarain did not help matters as the visitors were skittled out for 155 runs off 46.3 overs.
West Indies opening batsman and bowler Stafanie Taylor was deservedly acknowledged as Player of the Match, and Player of the Series awards, for her decisive contributions to the series.
The teams will meet in a two-match T20 series on Saturday, 19 and Sunday 20 January to cap off the tour.
West Indies v South Africa One Day International Series Results: Jan 7, 2013: WI v SA at Basseterre: SA won by 80 runs Jan 9, 2013: WI v SA at Basseterre: SA won by 4 wickets Jan 12, 2013: WI v SA at Roseau: WI won by 8 wickets (with 124 balls remaining) Jan 13, 2013: WI v SA at Roseau: No result (match rained out) Jan 15, 2013: WI v SA at Roseau: WI won by 22 runs South Africa: Shandré Fritz Trisha Chetty (Keeper) Mignon du Preez (Captain (Keeper) Marizanne Kapp Susanna Benade Cri-Zelda Brits Dané van Niekerk Yolandi Potgieter Chloe Tryon Sunette Loubser Marcia Letsoalo Dinesha Devnarain West Indies: Merissa Aguilleira (Captain) (Keeper) Stafanie Taylor Shemaine Campbelle Shanel Daley Deandra Dottin Kycia Knight Anisa Mohammed Juliana Nero Shaquana Quintyne Shakera Selman Tremayne Smartt