A trio of second-half scores helped Ulster to a 28-7 win at Southern Kings in the Pro14 on Sunday.
Argentina have secured their second win of the 2018 Investec Rugby Championship with a hard fought 23-19 win over Australia.
Greig Laidlaw kept his cool to maintain Clermont Auvergne's perfect start to the new Top 14 season.
Glasgow Warriors are the only club to have won each of their opening three fixtures after overcoming the Cheetahs.
Saracens needed two late tries from David Strettle to secure a come-from-behind victory over Northampton Saints.
Argentina's resolve was key to the surprise win against Australia, says head coach Mario Ledesma.
Television footage showed Lukhan Tui arguing with a supporter following Australia's Rugby Championship loss to Argentina.
David Pocock was left frustrated by Australia's wastefulness as they were beaten by Argentina in the Rugby Championship.
Frustrations boiled over after Australia's loss to Argentina, with Lukhan Tui involved in an altercation with a fan.
Australia's dismal Rugby Championship continued with a rare home loss to Argentina on the Gold Coast.