The tourists had earlier bowled out the hosts for 397 after they’d resumed their innings on 245-6.
Jeremy Solozano (111) and Shamar Springer (131) scored centuries, while Kagiso Rabada (3-47), Dane Piedt (3-41) and Keshav Maharaj (2-82) enjoyed success with the ball.
In reply, the Proteas lost Tony de Zorzi (nine) and Tristan Stubbs (eight) cheaply, but Markram then dominated in his 107-ball innings that included 16 fours.
After Markram retired out, captain Temba Bavuma (36*) and David Bedingham (35*) both got some valuable time at the crease.
The first Test between the West Indies and Proteas will take place at the Queen’s Park Oval in Trinidad and Tobago from 7-11 August and the second at the Guyana National Stadium from 15-19 August.
Photo: Ryan Wilkisky/BackpagePix
