Cricket South Africa on Monday added Stephen Cook to the South Africa squad for the final Test match against England, starting at SuperSport Park on Friday.
The 33 year-old Highveld Lions opening batsman currently tops batting averages with 415 runs at an average of 83 including two centuries in domestic four-day cricket this season.
If he does gain selection for the final XI he will part of the first ever father and son combination to represent the Proteas in a Test match.
His father, Jimmy, played in three Test matches against India and Sri Lanka between 1992 and 1993.
CSA Selection Convener, Linda Zondi, said: "Stephen has been in excellent form this season and gives us another option at the top of the order."
The Proteas have already lost the series, being two-one down, with one Test to play.