Dustin Johnson 'Taking a Leave of Absence' From Golf

Speculation abounds as to why the winner of the 2013 World Golf Championships would suddenly leave right before the Ryder Cup.
2:53 | 08/02/14

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Transcript for Dustin Johnson 'Taking a Leave of Absence' From Golf
cc1 Test message One of the biggest names in golf send out a zinger to his fan. Really surprising just days after pulling ow of his latest tournament Dustin Johnson says he's seeking help for what he is calling personal challenges and Ron is here with more on the shocking story. Yeah, bianna, really a shock to the world of sports and golf in particular. 30-year-old Dustin Johnson walking away from the middle of one of his best years of his career with the last major of the year, the PGA championship coming up next week. Would have been one of the favorites and it has a lot of people wondering why. Dustin Johnson. He's at the height of his professional golf career. Winner of the 2013 world golf championship, tying for fourth at the U.S. Open in June. Engaged to the daughter of hockey great Wayne gretzky but this morning Dustin Johnson is walking off the court. The sky's the limit in terms of his golf game and, you know, now he's not going to be playing there. Reporter: In a statement Thursday he announced "I am taking a leave of absence from professional golf effective immediately. I will use this time to seek professional help for permanent challenges I have faced." That statement causing an uproar on and off the green. The big question, why would one of the top 20 golfers in the world step away right before the prestigious Ryder cup and the PGA championship? There's a lot of golf he's going to miss and you don't necessarily pick right back up. Reporter: An article public published citing an unnamed source said Johnson had failed his third drug test in five years resulting in a six-month suspension. The professional golf association denying the claims telling ABC news Johnson was not suspended at all calling his leave of absence voluntary and when asked about drug use, Johnson's manager flatly denied those accusations. This isn't the first time Johnson has stepped away from the sport, in 2012 he announced on Twitter that he would be missing the masters tournament. He was then out the next two months due to a back injury. As to speculation that his decision to leave the tour may have been prompted by the breakup of his engagement to Paulina gretzky, Johnson's agent told ABC news the couple is happy adding, we live in a world of assumptions, speculation and innuendo and it's rarely accurate. And Johnson is long had a reputation as a hard partying bad boy of golf but how much is it rampant speculation and how much is true is difficult to say. The PGA only discloses disciplinary action when they test positive for performance-enhancing drugs. All we mow is what Johnson says, he needs to improve his mental, emotional and physical health. No one saw this coming. I feel really ode. Wayne gretzky's daughter is an adult. I mean, I grew up idolizing him and he's the father of a 25-year-old or 30-year-old. Let's hope her fiance coming out stronger.

This transcript has been automatically generated and may not be 100% accurate.

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