South Africa cruised to a 139-run win over Ireland in the teams' first ODI in Abu Dhabi, with Lizaad Williams tearing through their opponents' batting order.

The Proteas approached Wednesday's contest reeling from a shock T20I defeat to Ireland on Sunday, with Ross Adair's maiden international century ensuring the two-match series ended 1-1.

There was not to be a repeat in the 50-over format, however, with Ireland's batting order collapsing after Ryan Rickelton (91) and Tristan Stubbs (79) guided an otherwise shaky South Africa to 271-9.

The Proteas started miserably by losing three wickets for 39 runs, Mark Adair taking two of them on his way to figures of 4-50.

But opener Rickelton stayed cool while the wickets tumbled around him, lasting 102 deliveries and allowing Stubbs to join in on the act with comfortably his best ODI score, dragging South Africa to a respectable total.

Ireland might have harboured hopes of a successful chase, but Paul Stirling's fourth-ball dismissal for just two runs set the tone, and a spate of four more wickets in the space of six overs dropped Ireland to 61-5.

Williams finished with figures of 4-32 from his 10 overs for the Proteas, who needed just 32 overs to finish off the tail and bring some much-needed positivity to their tour of the United Arab Emirates, which started with an ODI series loss to Afghanistan.

Data Debrief: Williams wins it 

Rickelton and Stubbs carried South Africa to a score they were capable of defending despite no other batter scoring more than Bjorn Fortuin's 28 – seven scored 13 runs or fewer.

But it was Williams who made sure of the victory, taking three of the first four wickets to leave Ireland in a tailspin, then going on to record the best figures of his young ODI career.

In none of his previous five ODIs had Williams managed more than two wickets, while his 32 runs conceded were also his fewest in the format.

The West Indies clinched their third successive series win against South Africa with a dramatic 30-run victory at the Brian Lara Stadium in Trinidad on Sunday. A potent bowling attack, led by Romario Shepherd, Shamar Joseph, Akeal Hosein, and Matthew Forde, played a pivotal role in dismantling South Africa's chase and securing the win.

Set a target of 180, South Africa appeared to be in a strong position at 129 for 3 in the 14th over, but the West Indies bowlers had other plans. In a stunning collapse, South Africa lost seven wickets for just 20 runs within the space of 35 balls, eventually being bowled out for 149 in 19.4 overs, falling short by 30 runs.

The West Indies' innings was anchored by key contributions from Shai Hope (41) and Rovman Powell (35), allowing them to post a competitive 179 for 6. South Africa's bowlers, led by Lizaad Williams (3 for 36) and Gerald Coetzee (2 for 29), kept the West Indies' scoring in check, but the hosts managed a late flourish, adding 50 runs in the last five overs.

South Africa started their chase aggressively, racing to 100 inside 10 overs, but the West Indies bowlers tightened the screws in the middle overs. Akeal Hosein and Gudakesh Motie delivered crucial breakthroughs, dismissing Tristan Stubbs and Donovan Ferreira respectively. However, it was the duo of Romario Shepherd and Shamar Joseph who truly turned the game on its head.

Shepherd was particularly effective, claiming 3 for 15 in his four overs, while Joseph recorded a career-best 3 for 31. Their combined efforts derailed South Africa's chase, which at one point seemed on track for victory.

South Africa's middle-order collapse highlighted concerns for the visitors, with only one batter from No. 3 down managing to surpass 20 runs. In a match where individual scoring milestones were scarce, the West Indies' ability to clear the boundary made the difference. They hit 13 sixes compared to South Africa's six, underscoring their superiority in power-hitting.

The 47-run stand between Rovman Powell and Sherfane Rutherford provided the West Indies with a crucial edge, as their late acceleration ensured a challenging total for South Africa.

The victory not only secured the series for the West Indies but also demonstrated their growing dominance over South Africa, particularly in home conditions. The hosts will now look to build on this momentum as they prepare for future challenges.