Springboks face anxious wait to find out extent of Siya Kolisi hamstring injury

The flanker left the field after 24 minutes due to a hamstring problem and had to watch the remainder of the Test from the sideline, a match South Africa edged 17-10.

Tries from Edwill van der Merwe and Cameron Hanekom were added to by points from Sacha Feinberg-Mngomezulu and Handre Pollard in a close-fought encounter.

But there is concern for the Springboks, especially with the Greatest Rivalry Tests against the All Blacks on the horizon, as flanker Kolisi was a casualty in the triumph.

Speaking after the away success, Kolisi was philosophical about the injury and revealed that his first port of call would be a scan to ascertain the severity of the issue.

"I hurt my hamstring again, unfortunately. So, I'll go for a scan and see how far it is," he told ESPN Scrum at full-time on the sideline of the Estadio José Amalfitani.

"It is really tough, but I can't be sad about it," the skipper added. "There is nothing I can do now, other than to go and have a scan and then see how long I'm out for."

There was a more positive outlook on the injury from Springbok head coach Rassie Erasmus however, whose response to the injury should calm any concerned fans.

"He injured his hamstring, the other hamstring, but it doesn't look too bad," he said before lauding the Bok veteran's on-field impact during those opening 24 minutes.

"I thought Siya was really dynamic with his carries and his clean-outs."

The scoreline reflects just how tough an assignment this was for the Springboks and there was no doubt they were given an full-blooded test ahead of the All Blacks series.

The focus of course now turns to the Rugby's Greatest Rivalry series against New Zealand and South Africa will fly home in two groups, one on Sunday and one on Monday.

There they will join up with the rest of their teammates in Johannesburg who have already turned their focus to those three Tests on home soil before one in Baltimore, USA.