Meyer Bosman will start at No 12 against the Stormers this Saturday while Tim Whitehead has been shifted to No 13.
Paul Jordaan has failed a late fitness test, and so Sharks coach John Plumtree has been forced to make a change in midfield. Without Frans Steyn available and with Whitehead moving to outside centre, the Sharks will rely on Bosman, their third-choice No 12, in that key position.
Pat Lambie has also lost his race for fitness and so Louis Ludik will retain the No 15 jersey.
The pack remains unchanged, but Plumtree has opted for a five-two split on the bench. Jean Deysel has been added to the 22 and should feature in the second half of Saturday’s semi-final.
Sharks – 15 Louis Ludik, 14 JP Pietersen, 13 Tim Whitehead, 12 Meyer Bosman, 11 Lwazi Mvovo, 10 Frederic Michalak, 9 Charl McLeod, 8 Ryan Kankowski, 7 Marcell Coetzee, 6 Keegan Daniel (c), 5 Anton Bresler, 4 Willem Alberts, 3 Jannie du Plessis, 2 Bismarck du Plessis, 1 Tendai Mtawarira.
Subs: 16 Craig Burden, 17 Wiehahn Herbst, 18 Steven Sykes, 19 Jean Deysel, 20 Jacques Botes, 21 Odwa Ndungane, 22 Riaan Viljoen.