The SWD Eagles and Valke will host the Griffons and Leopards respectively in the Currie Cup First Division semi-finals.
A last-minute try gave the Valke a thrilling 56-52 win against the Griffons, while there were also wins for the SWD Eagles and Leopards in the Currie Cup First Division.
Boland and the Valke claimed convincing victories in the opening round of the Currie Cup First Division, while the Leopards also made a winning start.
The Valke remained unbeaten with a 25-22 victory over Border on day three of the U18 Academy Week in Paarl on Wednesday.
The Valke will be sending an experienced team to the U18 Craven Week in Paarl from 9-14 July.