Jason Day's former golf coach Sean Lynch has been charged with sexually assaulting a 13-year-old girl five times in 2019.
Lynch, who saw the emergence of now 12-time PGA Tour winner Day, is said to be "shocked" over allegations he indecently treated a child, a court heard on Monday.
The 65-year-old was arrested at his home in Banyo, near Brisbane Airport, on Sunday.
He then headed to Brisbane Magistrates Court on Monday morning where he was charged with five counts of indecent treatment of a child under 16.
It has been reported that police allege the renowned golf coach assaulted the girl over the space of 12 month at four locations in Brisbane and the Gold Coast.
Lynch also reportedly showed the girl pornography, which has prompted a charge of exposing a girl to an indecent video, and he also reportedly sexually touched her during these occasions.
Prosecutor Tim Wise said the allegations against Lynch also included him allegedly getting the child to touch his genitals.
His lawyer Scott Webb told the court his client denied all the charges and he and his wife Challie Takis had just been trying to assist the "troubled" girl.
"My client denies each and every allegation that has been said," Mr Webb told the court at the successful bail application.
"There's a lot more to this than, I would suggest, probably meets the eye."
Lynch, who also works as a sports psychologist, was released on bail and will next appear in court on January 13.
Bail conditions include not being allowed to go to the Gold Coast, having no professional contact with children, and handing in his passport.