Dustin Johnson stretches out lead to four in WGC-Mexico Championship

American Dustin Johnson propelled four strokes after three rounds of the WGC-Mexico Championship at Chapultepec.

The 34-year-old world number three, two ahead at the midway stage, was six clear halfway through day three, posting a five under 66 to achieve 16 under.

Rory McIlroy stays second after a 68, blending seven birdies with four intruder.

Patrick Reed birdied the last three openings in a 64 and is nine under, while Tiger Woods had a four-putt in his 70 and is six under with Tommy Fleetwood.

The third individual from the last gathering, Matt Kuchar, two off the lead medium-term, had three twofold intruders in a 79 to drop to one under.

Johnson sent his drive at the 367-yard standard four-second gap just three feet from the banner and came in the hawk putt.

After eight openings his lead was six after McIlroy's third intruder of the day, yet two gaps later the favorable position was just two.

Having gone 45 openings without a dropped shot in the competition, the twice previous boss made a twofold intruder at the tenth after twice hitting trees, while McIlroy came in a 34-foot birdie putt at nine - where he took four putts in cycle three - and pitched to three feet for another birdie at the following.

Johnson reacted with progressive birdies and included two more the back nine, while at the last McIlroy saw a birdie opportunity to slice the hole to three slides past the container.

Woods birdied the opening two gaps, tapping in at the first and afterward pitching to two feet from 137 yards, however, he twofold came up short the fifteenth in the wake of taking three putts from three feet, previously completing with his 6th birdie of the day.