A groggy Langer is helped from the field

South Africa bowler Makhaya Ntini felled the opener with the first delivery of Australia's reply and he suffered severe concussion.

Although wearing a helmet, Langer was cut behind his ear and had to have two stitches after being helped off.

Langer had scans in hospital on Saturday but was later discharged.

He still felt groggy on Sunday and stayed at the hotel instead of travelling to the ground in Johannesburg.

A decision has not been made on whether he will participate in the remainder of the game.

His parents Colin and Joy-Anne had flown from Perth to South Africa to watch their son's milestone game.

He looked unsteady on his feet and there were drops of blood on his shirt as he was led from the pitch by Australia physiotherapist Alex Kontouri and back-up bowler Shaun Tait.

Kontouri said: "It's always a worry when you have a head injury.

"He felt his arms and legs were weak. When he sat up he felt dizzy, he was getting a headache, he didn't feel steady on his feet and he was struggling to put one leg in front of the other."