A drop goal in the final play of the game from Jaco Taute handed the Stormers a 21-19 victory over the table-topping Sharks in their all-South African Super Rugby clash in Durban.
The Cape Town-based side trailed for the entire match until the last kick when, with a penalty advantage coming, fullback Taute put his drop kick between the posts.
The Sharks remain top of the overall standings on 44 points despite the loss, though their lead has been cut to just one point over the second placed New South Wales Waratahs.
The Stormers' playoff hopes have long since ended.
