The highly rated Stormers back-rower was sent to the sin bin in the 38th minute of the clash by referee Chris Busby after he dumped Glasgow's Matt Fagerson.
Munster legend CJ Stander is backing Stormers back-row Evan Roos' explosive style to earn him a spot in South Africa's World Cup squad later this year.
Ahead of the upcoming URC quarter-finals, we take a look at some of the South African players who are set to be in the spotlight for their teams over the weekend.
Stormers boss John Dobson is expecting the worst after losing Springbok number eight Evan Roos to injury in Friday's loss to Ulster at the Kingspan Stadium.