Proteas captain Temba Bavuma will open the batting with Quinton de Kock moving forward as the T20 World Cup nears, he has confirmed.
The 31-year-old opened the batting in Saturday's fifth and final ODI against the West Indies in Grenada, and while he was removed for a third-ball duck, it is a position where he has had success in his short T20 international career so far.
Of Bavuma's 13 T20 innings to date, seven have come at the top of the order while six have come at No 3, and he has performed well in both slots.
But as plans for this year's World - now set to be staged in the UAE in October - shift up a gear, Bavuma and the Proteas are now looking to settle on combinations, and it looks like he will be using the upcoming Ireland series to move back into the opening berth.
In the West Indies series, Reeza Hendricks (17, 42, 17, 2) opened for the first four matches while Bavuma batted at No 3 where he put up scores of 22, 46, 1 and 7 before his 0 on Saturday.
But with Aiden Markram, who blasted 70 (48) at No 3 on Saturday, now looking undroppable, Hendricks' run in the side could be over for a while.
"In terms of my role specifically, it will be at the top of the order going forward," Bavuma said after Saturday's 25-run series-deciding win.
"We don't have a lot of games going into the World Cup, so I think solidifying that partnership between Quinton and myself.
"Aiden has come in at No 3 and he has shown us what he can do.
"I think the rest of the batting order kind of selects themselves ... Rassie potentially at No 4 and Miller at No 5.
"For me, specifically, it will definitely be with Quinny at the top."
Head coach Mark Boucher, meanwhile, said he was getting closer to knowing what his strongest side was for the World Cup.
"I think we've got a basic idea," he said.
"There are still places that need to be solidified by individuals. We've got a couple of guys that might be a bit out of form, but that happens, and it doesn't mean you've become a bad player because you're not scoring runs.
"We'll get that right, hopefully, and if we can get all the guys firing on the right cylinders then I think we've got an idea of what could be our strongest line-up."
The Proteas are in Ireland for three T20s and three ODIs, with the first ODI set for 11 July.