Temba Bavuma has won the toss and the Proteas will bat first in the 2nd T20 International against Ireland in Dublin.
There are three changes to the South African team that easily won the first match on Monday with Wiaan Mulder in for George Linde, Bjorn Fortuin replacing Kagiso Rabada and Beuran Hendricks in place of Lizaad Williams.
Ireland have made one change with Craig Young replacing Barry McCarthy.
A win in this match means the Proteas will claim the T20 series with a game still to come.
The two sides drew the one-day series 1-1.
Paul Stirling, Kevin O Brien, Andrew Balbirnie (captain), George Dockrell, Harry Tector, Simi Singh, Lorcan Tucker (wicket-keeper), Shane Getkate, Mark Adair, Craig Young, Joshua Little
Temba Bavuma (captain), Quinton de Kock (wicket-keepr), Janneman Malan, Aiden Markram, Rassie van der Dussen, David Miller, Wiaan Mulder, Bjorn Fortuin, Beuran Hendricks, Lungi Ngidi, Tabraiz Shamsi