Sharks lock Pieter-Steph du Toit could ruled out for the rest of the season with a knee injury sustained in his side's win over the Cheetahs on Saturday.
Du Toit's injury is a huge blow to the Sharks and the Springboks as it means he is almost certainly ruled out of the World Cup in England later this year.
Du Toit left the field during the first half after he twisted his knee during a tackle. The 22-year-old may have torn his anterior cruciate ligament on the same knee where a similary injury kept him on the sidelines for most of the 2014 season.
"He is seeing the specialist who operated on the same knee previously, in Cape Town today (Monday)," said Sharks Team Doctor Alan Kourie.
"We are hoping that it is not a re-rupture of his ACL and a confirmed diagnosis will be made after seeing the specialist.
“We as The Sharks family and I’m sure South African rugby fans at large are hoping that his injury is not as bad as originally feared."