Rickelton hits Test best as South Africa on top against Pakistan
Rickelton made 176 not out as South Africa piled up 316 for four. He shared a fourth-wicket partnership of 235 with his captain, Temba Bavuma, who made 106.
A poor day for Pakistan was made worse when it was announced that opening batsman Saim Ayub had been ruled out of the rest of the game with a right ankle injury.
Ayub fell awkwardly in the outfield in the seventh over of the day. He was taken to the dressing room on a mobile stretcher.
"He is feeling low," said teammate Salman Agha. "He is...