Without departed skipper Owen Farrell, new recruit Fergus Burke slipped seamlessly into his shoes to guide the visitors to a morale-boosting 35-26 success.
Scotland international Andy Christie has signed a new long-term contract with Gallagher Premiership giants Saracens.
The Stormers' 15-match winning run, which included a URC Final win, came to an end in Cardiff, but for their charismatic coach, a rosy future lies ahead for the star-studded franchise
The Sharks advanced to the Currie Cup final after they edged Western Province 19-9 at Newlands in Cape Town on Saturday.
The Bulls stormed to a 39-6 win over the Stormers in a Super Rugby Unlocked match that was abandoned after 64 minutes due to lightning on Saturday.
Stormers head coach John Dobson believes some of the criticism levelled at Damian Willemse is unfair - reports Warren Fortune for Rugby 365.
Super Rugby has been somewhat underwhelming to date – which is why it’s so exciting to finally be in the knockout rounds. The cream has risen to the crop and we're now set for some fascinating clashes between Super Rugby's top sides.
Stormers and Western Province player Chris van Zyl has sealed a move to the Premiership.
The Lions could well be title contenders once again following a big win over the Waratahs, while the Stormers also made it two wins from two