Northampton overcame the loss of injured captain George Furbank to post a statement 30-21 Investec Champions Cup win against the Bulls in Pretoria.
A round-up of Friday's action, as Bath suffered a setback in their Champions Cup opener and Gloucester came through a tough European Challenge Cup test against Edinburgh
Leinster rid the ghosts of their past vs Champions Cup holders La Rochelle, emphatically beating Ronan O'Gara's charges 40-13.
France centre Jonathan Danty will miss the rest of his country's Six Nations campaign including matches against Wales and England after being given a five-week ban.
Sale dropped into the Challenge Cup after being brushed aside by La Rochelle as the French giants kept alive their bid for a hat-trick of Champions Cup titles.
Clinical Ulster secured a big victory against Racing 92 in the Champions Cup while Bath edged out Cardiff and holders La Rochelle lost again.
Leinster beat defending champions La Rochelle at the fourth time of asking, battling to a 16-9 away Champions Cup win in dreadful conditions.
A magnificent comeback from 17 points down saw La Rochelle become back-to-back Champions Cup winners vs Leinster 27-26 in Dublin.
Recap all the updates from Saturday's 2023 Heineken Champions Cup final between Leinster and La Rochelle in Dublin.
Defending Champions Cup holders La Rochelle set up a repeat of last year's final against Leinster with a 47-28 win against Exeter in Bordeaux.
La Rochelle will face Exeter in the Champions Cup semi-finals in Bordeaux after they clinically despatched Saracens 24-10.
A round-up of all of the action from Saturday's three other Heineken Champions Cup round of 16 games.
La Rochelle broke Ulster hearts in the very final play to book a last-16 spot, while Ospreys, Saracens, Sharks and Bulls won too.
Antoine Hastoy scored 26 points as La Rochelle made it two wins from two in the Champions Cup, holding firm to beat Ulster 36-29 in Dublin.
A dramatic final-minute try by Arthur Retiere secured La Rochelle a first European Cup triumph, as they beat Leinster 24-21.
La Rochelle's Ronan O'Gara has termed his side's Champions Cup success vs Leinster as "surreal"; Johnny Sexton called the loss "devastating".
Recap all the updates from Saturday's Heineken Champions Cup final as La Rochelle beat Leinster in Marseille.
La Rochelle secured their spot in the Champions Cup final for a second successive season after claiming a 20-13 victory against Racing 92.
Leinster and La Rochelle joined Toulouse in the European Champions Cup semi-finals with wins over Leicester Tigers and Montpellier respectively.
Bristol Bears secured a narrow Champions Cup Round of 16 first leg win at Sale Sharks, while La Rochelle won well at Bordeaux-Begles.