Sean Williams hit an aggressive century for Zimbabwe but South Africa were in control after the second day of the first Test at Queens Sports Club on Sunday. The left-handed Williams hit 137 off 163 balls — more than half his team’s total of 251. 

South Africa led by 167 runs in the first innings and stretched their lead to 216 runs when they reached 49 for one at the close of play. 

Earlier, all-rounder Wiaan Mulder took 4-50 and left-arm spinner Maharaj claimed 3-70.