Justin Geduld, the Springbok Sevens international, will play at outside centre for the South Africa Under-20 training squad's opening touring match against an Argentina XV on Saturday.
The squad will also play two matches against their Argentina Under-20 counterparts - on 16 April (Corrientes) and 21 April (Buenos Aires).
The tour is in preparation for the SA U20's participation at the Junior World Championship during June in France.
South Africa Under-20: 15 Sylvian Mahuza, 14 Luther Obi, 13 Justin Geduld, 12 Harold Vorster, 11 JP Lewis, 10 Robert du Preez, 9 Percy Williams, 8 Aidon Davis, 7 Roelof Smit, 6 Kwagga Smit, 5 Dennis Visser, 4 Jannie Stander, 3 Marné Coetzee, 2 Jacques du Toit, 1 Neethling Fouché (captain).
Date: Saturday, April 13
Kick-off: 16.00 (21.00 SA time; 19.00 GMT)