Rory McIlroy crumbles in second round to miss the cut in Hong Kong

World number one Rory McIlroy has failed to make the cut following a disastrous second round at the Hong Kong Open.

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The Northern Irishman started well by hitting four birdies in the first 11 holes but began to slip when he missed six shots on the last seven to drop from a one-under-par score to five-over in total.

New Zealand pro Michael Campbell has taken the clubhouse lead at the halfway stage with a nine-under 64, while China's Zhang Lian-wei sits just below with an eight-under 66.

Javi Colomo, who led at the end of the first round yesterday, has slipped down to sixth with a score of five-under-par.