Published: Dec 08, 2011 9:32 AM EST
Updated: Dec 09, 2011 7:30 AM EST

DUBAI, United Arab Emirates (AP) - Y.E. Yang has pulled out of the Dubai World Championship midway through the first round with a neck injury.

The 42nd-ranked South Korean was at 1-over after four holes in the opening round Thursday when he retired.

Yang later tweeted that he was "disappointed" to end his year this way.

Yang finished seventh at last week's Hong Kong Open.