Last week's Abu Dhabi winner Paul Casey made an indifferent start, carding a par 72, while Ireland's Paul McGinley finished at one under.

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With only nine players in the 54-strong field under par, the Ryder Cup trio of Paul Casey, Padraig Harrington and David Howell are firmly in contention on level par.

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Mickelson ended alongside Ernie Els, Dustin Johnson and Ryo Ishikawa with Paul Casey in a group at even par.

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