A bruised Stormers side were left counting the heavy cost of a quarterfinal win over Cardiff that resulted in talisman Sacha Feinberg-Mngomezulu leaving the field with a serious ankle injury, coach John Dobson said. Feinberg-Mngomezulu’s injury came at the worst possible time for the Stormers, who are facing a tough United Rugby Championship (URC) semifinal against Leinster in Dublin on Saturday.Dobson confirmed the Springbok flyhalf will undergo scans, but he is highly likely to miss the semifinal at the Aviva Stadium.Another player expected to miss the trip to Ireland is forward Ruben van Heerden, who suffered a head injury and is set to follow return-to-play protocols.Wing Seabelo Senatla is also doubtful after crashing into perimeter advertising boards at the Cape Town Stadium, and inside centre Dan du Plessis has an injured knee.“It was a costly quarterfinal,” Dobson said.“Sacha looks pretty serious, to be honest. The doctor’s given me some views, but it looks like a proper ankle injury.“However, I feel like we are going to be okay.“Jurie Matthee is doing really well, [but] this is a big blow.“But when we have blows, this team gets together and gels. To lose probably the most in-demand player in the world [Feinberg-Mngomezulu] before the semis is not ideal.“Senatla’s was a head injury assessment [HIA category one]. He was knocked out, so he won’t play this week.“I thought he was absolutely magnificent.Stormers coach John Dobson. Picture: GALLO IMAGES/ZIYAAD DOUGLAS