The Dolphins beat the Lions by 8 waickets while the Warriors restricted the Eagles to the required 150 runs.
The format for the semi finals have changed this year, whereby the teams play a best of 3 games, to determine who will go through to the final.
The Dolphins will be taking on the Cobras in Cape Town on friday with the return leg in Durban on Sunday afternoon.
The Eagles will host the Warriors in Bloem on Wednsday and the return game in PE will be on Sunday starting at 11.
It’s going to be an interesting couple of games, with the new format, as either team will have some sort of an advantage going into the 2nd game. Keep your eyes on the Pro20 blog, or for live updates from the games, follow @Pro20 on twitter