Rhyno Smith scored twice in the closing stages against Southern Kings to again secure the bragging rights for the Cheetahs.
Exeter Chiefs rallied in the second half against Sale Sharks, but the Premiership leaders still slipped to a first defeat since November.
Northampton Saints looked to be heading top of the Premiership until London Irish sprung a shock following Api Ratuniyarawa's dismissal.
Jacques Nienaber had previously served as Rassie Erasmus' assistant with South Africa and has now taken the top job.
Trent Robinson says Michael Cheika is helping Sydney Roosters push themselves further ahead of the new NRL season.
Michael Fatialofa is showing "encouraging signs of improvement" and has been moved to the Major Trauma Unit at St Mary's Hospital.
Saracens owner Nigel Wray apologised for his "ill-considered approach" after a report detailed how Saracens fell foul of salary-cap rules.
The mercurial Finn Russell has been punished for a breach of team protocol just nine days before Scotland's first Six Nations game.
New Scotland captain Stuart Hogg proved if you don't ask, you don't get when he put himself forward to lead his country.
Saracens have given Premiership Rugby permission to release the full report into their salary cap breaches, which have led to relegation.
England captain Owen Farrell had the chance to confirm he would stay with crisis-hit Saracens, but instead he said talks were "ongoing".
France captain Charles Ollivon does not believe Saracens' impending relegation from the Premiership will have any impact on England.
Johnny Sexton expects to lead Ireland against Scotland in Dublin and Jordan Larmour is expected to be in contention.
Wayne Pivac is hoping Liam Williams will make his comeback from an ankle injury in the second round of the Six Nations against Ireland.
The Waratahs have a new skipper in place ahead of their season opener against the Crusdaers on February 1.
Championship-bound Saracens will be without Will Skelton until the end of next month following his dismissal last weekend.