Springbok coach Jacques Nienaber expressed his concern over star loose forward Pieter-Steph du Toit trudging off with a suspected shoulder injury during the first half of their 27-9 win over the British and Irish Lions on Saturday.
Du Toit was tackled by Lions wing Duhan van der Merwe in a suspect but marginally legal tackle where he got lifted off the ground and landed on his shoulder.
Substitute Kwagga Smith replaced Du Toit initially before lock Lood de Jager also joined the field as a hybrid loose-forward.
"Pieter-Steph is the type of guy I know won't come off normally during a game," said Nienaber.
"I haven't seen him come off willingly much. The assessment hasn't been done by the medical team yet and it will probably be 48 hours before he'll have a proper diagnosis once all the specialist input has been received.
"Then we'll have a proper picture. But he's not a guy who goes off on his own."
There will only be clarity on 2019's World Rugby Player of the Year's affliction later next week.