The Golden Lions and Sharks will contest the main match at the U18 Craven Week in Johannesburg on Saturday.
The Lions beat Border 44-8 and drew 13-13 with Western Province, while the Sharks thrashed the Blue Bulls 53-33 and SWD 65-26.
WP and Free State, who are also unbeaten this week, will meet in the second-last match.
U18 Craven Week fixtures (Saturday):
Eastern Province CD vs Border CD (08:00)
Limpopo Blue Bulls vs Griquas (09:00)
Namibia vs Zimbabwe (09:25)
Valke vs Griquas CD (10:15)
Eastern Province vs Leopards (10:35)
SWD vs Pumas (12:05)
Boland vs Griffons (12:15)
Border vs Blue Bulls (13:40)
Free State vs Western Province (13:45)
Sharks vs Golden Lions (15:30)
Photo: Sydney Seshibedi/Gallo Images