The 2019 Rugby World Player of the Year nominee only rejoined top-flight rugby recently after recovering from a fractured jaw, but is hitting his straps for Toulon in the Top 14.
The diminutive winger scored the opening try for the French giants against Castres, receiving the ball on the right wing and executing his trademark step before going over in the corner. Kolbe continued to shine throughout the match, breaking the line on several occasions as Toulon ran out 28-20 winners.
Fellow World Cup winners Trevor Nyakane and Warrick Gelant came off the bench for Racing 92 to help them to a 38-31 victory over a Montpellier side that featured their Springbok teammate Cobus Reinach.
Bok forward Rynhardt Elstadt fronted up against La Rochelle, as Toulouse defeated them 26-17. Bok flyer Dillyn Leyds scored three points for La Rochelle, while Raymond Rhule also featured.
Springbok hopeful Madosh Tambwe starred for Bordeaux Begles, scoring two tries - including a fantastic individual effort - as Bordeaux and Clermont drew 23-all.
Across the Channel in Premiership Rugby, Springbok flyhalf Robert du Preez slotted nine points off the kicking tee for the Sale Sharks, who went down 29-13 to Harlequins. His brothers Daniel and Jean-Luc were their usual busy selves, but they were unable to impact the scoreline.
Springbok duo Andre Esterhuizen Wilco Louw starred for the Quins, who controlled the match for most of the 80 minutes.
Capped Springbok scrumhalf Louis Schreuder along with former SA u20 star Juan Schoeman featured for Bath as they ran out 27-14 winners over Northampton Saints.