Yuvraj Singh started confidently but was unable to keep up the momentum.
He added 54 runs in 47 balls with Yousuf, before the Pakistan player drove on the up to mid-on fielder De Villiers off Arbie Morkel, bowling the first over of his second spell to end the stand.
But Yuvraj, 30 when MS Dhoni joined him, failed to prosper much and was out after adding another run to his score, caught driving at short extra cover off Morne Morkel.
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