Freak injury rules Quinton de Kock out of third Test

Quinton de Kock has been ruled out of South Africa's third Test against England in Johannesburg after sustaining a "freak" knee injury at his home on Wednesday.

Dane Vilas, who made his Test debut in July 2015, has been called up to replace wicketkeeper De Kock, who is waiting to discover the extent of his injury.

Proteas team manager Dr Mohammed Moosajee said: "Quinton slipped and sprained his right knee at home late yesterday afternoon.

"Initially he didn't think it was too serious but woke up after midnight in pain and with a swollen knee. He will have investigations done later today to ascertain the extent of the injury."

England currently hold the advantage in the four-match series, having won the opener at Kingsmead before the second Test at Newlands ended in a draw.

The series concludes in Centurion in a match that gets underway on January 22.