Western Province, Stormers and Springboks hooker Tiaan Liebenberg has been forced to retire due to injury.
Western Province Rugby have announced the signing of Bulls hooker Bongi Mbonambi, who will join them ahead of the 2015 campaign.
Stormers coach Allister Coetzee felt a staggering injury list hampered his team's efforts to reach the play-offs this season.
The Stormers' resurgence could not have come at a worse time for the Sharks, whose hopes of a home semi-final are looking slim.
Stormers coach Allistair Coetzee has made one change to his starting XV for Saturday's clash against the Sharks in Cape Town.
Stormers boss Gert Smal is pleased with the progress the Cape Town-based franchise has made since his appointment in April.
Hooker Deon Fourie is the only big injury worry for the Stormers ahead of Saturday's Super Rugby clash against the Sharks.
The Bulls saw their play-off hopes disintegrate on Saturday as they went down 16-0 against the Stormers at Newlands in Cape Town.
The Stormers and Bulls might not be amongst the top teams, but both will be highly-motivated when they meet in Cape Town on Saturday....
Gio Aplon returns to the Stormers XV for Saturday's derby against the Bulls while SA Sevens ace Seabelo Senatla is on the bench.
Former Tonga second row and captain Inoke Afeaki is optimistic Singapore can secure the soon to be open spot in Super Rugby.
Stormers lock Eben Etzebeth will not play in the 2014 Super Rugby tournament after sustaining another injury with a broken toe.
SANZAR will introduce a strengthened concussion test for players in Super Rugby in line with moves made by the IRB.
Stormers and South Africa flanker Schalk Burger has signed a two-year contract with Japanese side Suntory Goliath.
A last-second drop-goal from Jaco Taute helped the Stormers to a 21-19 win over the table-topping Sharks in Durban on Saturday.
In 20 previous matches between the Sharks and the Stormers, both sides have been victorious on 10 occasions.
Duane Vermeulen will captain the Stormers in Saturday's all-South African Super Rugby encounter against the Sharks in Durban.