Tiger Woods' former coach Hank Haney has admitted that the golfer was a sex addict.
The swing coach said the sports star has made marked improvement since his stint in the sex rehab.
"The only thing I knew about was his issue with the sex addiction," Radar Online quoted him as telling The Golf Channel.
He added: "It's an ongoing day-to-day battle, but so far I think he's doing a really good job."
Haney, who had been Woods' coach for the last six years, resigned last week.
However he still maintains cordial relationship with Woods.