03 June,2012 07:28 AM IST | | AFP
The Northern Irishman had regained the World No 1 ranking four weeks ago but has since missed the cut at the US tour's Players Champion-ship and Europe's BMW PGA Championship at Wentworth.u00a0
Rory Sabbatini posted a second straight 69 to seize the halfway lead, with 14-time major champion Tiger Woods leading a group just one shot adrift.u00a0