Cape Town - Springbok skipper Siya Kolisi has escaped sanction for what appears to be a blatant headbutt against Scotland at Murrayfield on Saturday.
In the 30th minute of the clash, Kolisi, while held on the ground by Scottish midfielder Peter Horne, used the back of his head to strike his opponent.
Springbok coach Rassie Erasmus claimed to have "been aware" of the incident, but "not to have seen it".
Erasmus went on to add that "I know the man (Kolisi) and it would surprise me".
According to World Rugby's citing policy, the Citing Commissioner has 24 hours after the final whistle in which to cite any incidents - which would've been around 21:00 on Sunday.
In their first match on their end of year tour against England, the Springboks were incensed that flyhalf Owen Farrell escaped a World Rugby sanction for a shoulder charge in extra-time.
The Springboks went as far as to practice shoulder-charge tackles in the week after the match.