Elgar posted his highest test score of 140 .
Bavuma made 64 before Trent Boult ( 4 - 64 ) and Neil Wagner ( 3 - 88 ) combined to mop up the tail .
Elgar posted his highest test score of 140 and Bavuma made 64 before Trent Boult ( 4 - 64 ) and Neil Wagner ( 3 - 88 ) combined to mop up the tail .