MEXICO CITY -- Dustin Johnson watched a six-shot lead shrink to two before putting together enough birdies Saturday for a 5-under 66 and a four-shot lead over Rory McIlroy in the Mexico Championship.
Johnson nearly threw away his big lead by hitting the trees three times on his way to a double bogey on No. 10. He answered with back-to-back birdies. McIlroy got no closer than two shots and had to settle for a 68.
No one else was closer than seven shots of the lead.
Tiger Woods pulled to within four shots after Johnson's blunder until a four-putt double bogey and a three-putt bogey on consecutive holes.