A dramatic final day of the regular season in the Pro14 saw Glasgow Warriors make the semi-finals, while Ospreys and Scarlets will face off.
Exeter Chiefs and Saracens kept winning at the top on Saturday, while Leicester Tigers' Premiership status is not yet secured.
The Stormers have now won eight consecutive home matches against the Bulls after outscoring their South Africa rivals by three tries to two.
With Ollie Devoto's try against Harlequins on Saturday, Exeter Chiefs crossed in a record 72nd consecutive Premiership match.
Jordie Barrett scored two tries and laid on another in an emphatic win for the Hurricanes and the Sharks made a great start to their tour.
Anthony Watson was back in Premiership action on Friday, but Newcastle Falcons' time in the top flight looks to be coming to an end.
Sevu Reece and George Bridge scored twice as the Crusaders outclassed the Lions in Super Rugby on Friday.
New Zealand have been handed a boost after Richie Mo'unga committed his future to the All Blacks.
Israel Folau is soon to learn his fate from Rugby Australia and Kurtley Beale has concerns for his Waratahs team-mate.
Jack Singleton, who came through Saracens' academy, is to return to Allianz Park next season on a three-year deal.