The Southern Kings claimed a first Pro14 win of the season and consigned Glasgow Warriors to a first loss in Port Elizabeth.
Glasgow Warriors are the only club to have won each of their opening three fixtures after overcoming the Cheetahs.
Pro14 champions Leinster were defeated by last season's runners-up Scarlets in a tense clash on Saturday.
Bryan Byrne's late try and Ross Byrne's subsequent conversion saw champions Leinster snatch victory over Cardiff Blues in the Pro14.
Leinster will have to see off three former champions if they are to retain their European Champions Cup title in 2018-19.
Joe Tomane has joined Leinster from Montpellier ahead of the 2018-19 season.
Brian O'Driscoll sees no reason why Leo Cullen or Stuart Lancaster should depart Leinster even if their services are sought elsewhere.
Rory Best's hamstring injury means he will miss Ireland's three-match series in Australia next month.
Victory over the Scarlets saw Leinster become the first team to combine European Champions Cup success with the Pro14 title.
Munster came within striking distance of upsetting European champions Leinster, but the hosts hung on to reach the Pro14 final.
Leinster were playing catch-up in Saturday's European Champions Cup final against Racing 92 until the last couple of minutes.
Just as they did in 2009, 2011 and 2012, Leinster tasted European Champions Cup glory as Racing 92's stern resistance proved in vain.
A hamstring injury has cruelly denied Dan Carter a role in Racing 92's European Champions Cup final against Leinster.
Racing 92 stand between Leinster and a record-equalling fourth European Champions Cup win, which is Johnny Sexton's sole focus.
Leinster and Racing 92 will battle it out for European Rugby Champions Cup glory in Bilbao, and we have assessed the best Opta stats.
Fergus McFadden's season is over after the Leinster back damaged his hamstring against Scarlets last month.