 Sibanda cracked five sixes in his 60 while Vincent cleared the ropes twice as he hit an unbeaten 75 off 55 balls.Tatenda Taibu, the Rocks captain, enabled his team to post a decent total with a controlled 57 as the rest of the top order failed to shine.Wickets fell steadily with Brendan Taylor's part-time offspin proving particularly effective as he claimed 2 for 17 in four overs.