Michael, from South Africa, shot a 3-under-par 69 in the second round and is at 9-under 135 after 36 holes. Two other South Africans -- Alex Haindl and Dawie Van der Walt -- are tied with England's Robert Rock for second at 7-under. Haindl had a 6-under 66, best in the second round, and Van der Walt and Rock each shot 70.
Marius Thorp, shot 71 and is alone in fifth at 6-under. Six golfers are tied for sixth another stroke back.
Michael, playing the second nine of the Leopard Creek Country Club course first, opened with back-to-back birdies and got to 4-under with birdies at 15 and 17. But he had a 6 at the par-5 18th hole and played the front side even with birdies at Nos. 1 and 3 and bogeys at 3 and 9.
Haindl's 66 included birdies at Nos. 1 and 6 and eagle 3s at the second and 15th holes.
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