Louis Oosthuizen withdraws from Byron Nelson

Louis Oosthuizen withdrew from the Byron Nelson Championship before the final round because of a neck issue.

The 2010 Open champion was at 3-under 207 and tied for 32nd place after shooting even-par 70 in the third round.

Oosthuizen entered the Nelson at world No 7, the highest-ranked player in the field. He had missed the cut in his only other Nelson appearance.