Gethin Jenkins dragged a shot at goal wide after requiring assistance to keep the ball on the tee in a victorious final match.
Munster overturned a 14-point deficit to beat Glasgow Warriors thanks to Rory Scannell's monster penalty with the final play.
Connacht finally secured an away derby win at Ulster, taking advantage of Matthew Rea's dismissal early in the second half.
Olly Robinson's late try completed a second-half comeback from Cardiff Blues as they secured a Pro14 victory over the Cheetahs.
The Cheetahs' three-match losing run in Pro14 ended but a last-gasp try saw Ulster deny them victory.
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.
John Cooney's kicking got Ulster up and running, while Connacht's Craig Ronaldson fell just short and Munster ran riot in Pro14.
The Pro14 semi-final line-up is complete, with Scarlets to play Glasgow Warriors, while Munster take on Leinster.
Rory Best scored two tries but Ulster's bid to overtake Edinburgh came to an end with a 24-24 draw away to Munster.
Johan Goosen's return to rugby was spoiled by Munster, who engineered an impressive second-half turnaround at the Cheetahs in Pro14.
Johan Goosen has come out of retirement and will make his Cheetahs debut in Pro14 against Munster on Friday.
After announcing his “retirement” in late 2016 from professional rugby, while still contracted to French giants Racing 92, Johan Goosen looks set for a...
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Scarlets picked up an impressive win over Glasgow Warriors to keep the pressure on Leinster, while Benetton, Cheetahs and Munster also won.
There were wins for Glasgow Warriors, Edinburgh and Cheetahs in Pro14 on Saturday, with Duncan Weir among the star performers.
Connacht looked set for a valuable win in Bloemfontein but Niel Marais had other ideas, getting Cheetahs their first victory since January.