The Dolphins come into the game with two wins in a row, including victory over the Titans on Sunday.
The Titans, in contrast, have lost their last two matches to scrape into the playoff match.
The Cobras await the winner in the final to be played at Newlands, in Cape Town, on Friday.
Dolphins team: Cameron Delport, Morne van Wyk (captain, wk), Vaughn van Jaarsveld, Jonathan Vandiar, Khaya Zondo, Ryan McLaren, Andile Phehlukwayo, Daryn Smit, Robbie Frylinck, Keshav Maharaj, Tshepo Moreki.
Titans team: Henry Davids (captain), Jacques Rudolph, Theunis de Bruyn, Dean Elgar, David Wiese, Qaasim Adams, Albie Morkel, Mangaliso Mosehle (wk), Tabraiz Shamsi, Junior Dala, JP de Villiers.