Cape Town - The Stormers are fretting over the fitness of tighthead prop Wilco Louw, who was injured in their pre-season match against the Bulls in Wellington at the weekend.
The Stormers revealed on their official website that Louw suffered a hip flexor injury in the 26-all draw at Boland Stadium.
The Springbok front ranker underwent scans and more clarity on the extent of the injury will be revealed this week.
However, at this stage it looks as though the 23-year-old will be sidelined for at least four weeks.
The Stormers are already concerned over the fitness of Springbok duo Pieter-Steph du Toit and Siya Kolisi, who were not risked for the Bulls game.
Du Toit is struggling with a sore back, while Kolisi has a hamstring injury.
Other players who were also not available for the warm-up game due to injury include Ali Vermaak (hamstring), Scarra Ntubeni (hamstring), Frans Malherbe (neck), Eben Etzebeth (shoulder), Juarno Augustus (neck), Jano Vermaak (knee), Jean-Luc du Plessis (hip), Dan du Plessis (shoulder) and SP Marais (toe).
The Stormers open their Super Rugby campaign against the Jaguares at Newlands on February 17.