Dustin Johnson is still sitting pretty at the summit of the golf standings, despite not winning a major in two years.Johnson is currently the number one ranked golfer in the world, and had a relatively consistent start to 2018.The 34-year-old tied for 10th place at The Masters, and finished in a respectable third at the U.S. Open at Shinnecock Hills in New York.Despite missing the cut at The Open in Carnoustie, Johnson has won three tournaments this year, most recently the Canadian Open, finishing three shots ahead of the field to claim the £875,000 first prize.At the ongoing PGA Championship, taking place at Bellerive Country Club, Johnson sits in fourth position going into the weekend rounds, carding a second round of four-under to sit on seven-under-par.A very healthy position to be in indeed, but with the three players above him in Kevin Kisner, who leads on ten-under-par, Gary Woodland and Brooks Koepka still not finished with their round at the time of writing, 'DJ' could be closer by the end of the evening than the three shots behind he is now.Tiger Woods and Rory McIlroy will need great rounds to be up there challenging, both finished on even par in round one but are yet to tee off for the day, whilst Jordan Spieth is three shots back from Johnson.Nothing seems to phase Johnson on the course at the moment, and ever since his collapse at the 2015 U.S. Open, where he missed shots to win, and then force a play-off with eventual winner Jordan Spieth, he has become more reliable.He needed all his calmness earlier today though when on the third tee at Bellerive.Faced with a 148-yard par 3, Johnson lined up his shot, but just as he was about to connect, a flying ball came inches from connecting with him, as shown in the video below.

Despite that distraction, being the world number one that he is, Johnson set himself up for a perfect birdie attempt, which he sunk.

Johnson wasn't happy however when the incident occurred, initially he thought it was the flash of a camera, but broadcasters caught glimpse of the ball coming close to making contact with him.

Whilst initial theories claim a ball was thrown from the spectators, a Twitter user has seemingly debunked that myth with an answer.

According to the image shared by Tom Herron, Spanish golfer Jorge Campillo hit an errant shot off the 11th tee, which went way-right and landed at the close-by third hole teeing range.

Clumsy - but the case is well-and-truly closed.