Paterson, who has played four T20Is for the Proteas, will replace Morne Morkel who will be on the sidelines for four to six weeks after he suffered a side strain in the Proteas’ 333-run win in the first Test in Potchefstroom.
The 28-year-old Paterson told the Cape Cobras website: “I was shocked when I phoned my girlfriend, Nicole Williams, to tell her I was called up to the Test team.
“I have mixed feelings and I felt a bit afraid – it is a mixture of joy and nervousness.”
The right-arm pacer, who represented South Africa A earlier this year, will have a familiar face to work with in Bloemfontein with former Cobras seamer Charl Langeveldt the current Proteas bowling coach.
Paterson, who has played two four-day games this season for his franchise, says he is feeling good about his bowling.
He continued: “I am looking forward to link up with Langers (Charl Langeveldt).
“The fact that I have represented South Africa before and that I represented South Africa A in the off-season which gave me access to the first-class arena, has been to my benefit.
“My rhythm has been good and I have hit the right lengths but the wickets have been very flat.”