Kick-off is at 12:45 SA time.
Smit, is up against his understudy from last season, Sias Ebersohn, after he replaced the Force flyhalf after two disappointed performances in a row last season.
Smit, 28, will hope to make an impression for the Cheetahs with journeyman flyhalf Burton Francis breathing down his neck from the bench.
The other change in the starting XV sees the return of Heinrich Brüssow to the starting XV.
The Cheetahs are going to have their work cut out for them when they head to Perth as the Force are coming off a historic win against the Reds where they outplayed the former champions in almost every aspect of the game.
15 Hennie Daniller, 14 Willie le Roux, 13 Johan Sadie, 2 Robert Ebersohn, 11 Raymond Rhule, 10 Riaan Smit, 9 Sarel Pretorius, 8 Phillip van der Walt, 7 Pieter Labuschagne, 6 Heinrich Brüssow, 5 Francois Uys, 4 Lodewyk de Jager, 3 Lourens Adriaanse, 2 Adriaan Strauss (captain), 1 Trevor Nyakane
Substitutes: 16 Ryno Barnes, 17 Coenie Oosthuisen, 18 Rynhard Landman, 19 Johannes Prinsloo, 20 Piet van Zyl, 21 Burton Francis, 22 Ryno Benjamin