Meanwhile, veteran fast bowler Dale Steyn is on the verge of eclipsing Shaun Pollock's record (421) as the leading South African Test wicket-taker - needing one more wicket to surpass Pollock.
"He's one away, so I'm pretty sure he will get it during the 5 days," Elgar said of his fellow Titans team-mate.
Play on Wednesday is scheduled to get under way at 10:00.
Proteas Test squad:
Faf du Plessis (Titans, captain), Hashim Amla (Cape Cobras), Temba Bavuma (Highveld Lions), Theunis de Bruyn (Titans), Quinton de Kock (Titans), Dean Elgar (Titans), Zubayr Hamza (Cape Cobras), Keshav Maharaj (Dolphins), Aiden Markram (Titans), Duanne Olivier (Knights), Vernon Philander (Cape Cobras), Kagiso Rabada (Highveld Lions), Dale Steyn (Titans), Dane Paterson (Cape Cobras)
Pakistan tour to SA 2018/19
December 26-30: 10h00, 1st Test match, SuperSport Park, Centurion
January 3-7: 10h30, 2nd Test match, Newlands, Cape Town
January 11-15: 10h00, 3rd Test match, Wanderers Stadium, Johannesburg
January 19: 13h00, 1st ODI, St. George's Park, Port Elizabeth (D/N)
January 22: 13h00, 2nd ODI, Kingsmead, Durban (D/N)
January 25: 13h00, 3rd ODI, SuperSport Park, Centurion (D/N)
January 27: 10h00, 4th ODI, Wanderers Stadium, Johannesburg (Day)
January 30: 13h00, 5th ODI, Newlands, Cape Town (D/N)
February 1: 18h00, 1st T20 International, Newlands, Cape Town (D/N)
February 3: 14h30, 2nd T20 International, Wanderers Stadium, Johannesburg (Day)
February 6: 18h00, 3rd T20 International, SuperSport Park, Centurion (D/N)