>>Golfer Dustin Johnson Denies Cocaine Problem

(Undated) -- Golfer Dustin Johnson is denying he has a cocaine problem. In an interview with SI.com, Johnson says he did not go into rehab last summer, but instead took a leave of absence from the PGA Tour to consult with experts, including a life coach, about how to handle his life internally and the pressures that go with that.

>>Brutally Injured Golfer Withdraws From Weekend PGA Event

Days after being beaten and robbed, Robert Allenby announced on Tuesday that he has withdrawn from this week's Humana Challenge.

Allenby said in a statement released by the PGA Tour, "On the advice of my personal doctor, I have decided to withdraw from this week's Humana Challenge. This will enable me to ensure I am fully recovered prior to rejoining the PGA Tour. I anticipate a full recovery and look forward to returning in the near future."

Allenby was beaten and robbed after being kidnapped from a wine bar on Friday night. After he was helped back to his hotel, Allenby contacted police and received medical treatment.

On Sunday, Allenby was interviewed by Golf Channel and he had stitches in his forehead and his left eye was swollen shut. Police continue their investigation.

Allenby, a four-time PGA Tour winner, missed the cut at the Sony Open in Hawaii last Friday after shooting consecutive 1-over 71s.

The Australian was replaced in the Humana field by Whee Kim.