JASON Day says he could still pull out of next week's Masters depending on the health of his mother.
The Australian pulled out of the World Golf Championships in Austin, Texas, last week with Dening Day undergoing surgery for lung cancer.
Speaking on a video conference set up by the organisers of the PGA Tour's Zurich Classic in late April, Day said he was due to arrive in Augusta on Friday to begin practice for next week's first major of the season.
The world No.3 said he "hasn't touched a golf club at all" after joining his mother last week in Ohio and his participation in the Masters would all rest on the prognosis of her illness.
"Obviously, I'm still nervous because we're still waiting to see ... if it has spread or not," Day said.
"From there, we have to kind of come up with a game plan whether to go chemo, a form of chemo radiation, or something else.
"It's still kind of a bit of an emotional time for me," added Day, whose father, Alvin, died of cancer when he was 12.
"Obviously, I've been hanging out with my mum a bit and seeing her and she's recovering well.
"She's a tough lady, but it's hard because I look at her and she's on the painkillers and all that stuff, what she needs to do to recover ... but I can't help but think of my dad when I see her in that situation."
Day said doctors had said the surgery was successful, and now the family awaits results of tests to see if cancer is present in his mother's lymph nodes.
"My mum told me not to worry about it," Day said.
"It's hard to do that. It's easy to say ... but it's really, really difficult.
"So currently I'm scheduled to play Augusta ... but if things don't come back the way we want them, I don't know what's going to happen."
Day also is scheduled to participate in the Zurich Classic, which runs from April 27-30 and has changed to an unusual format featuring 80 two-player teams, with players picking their own partners.
Teams will alternate shots in the first and third rounds and play best ball in the second and final rounds.
Day has chosen American Rickie Fowler as his teammate.
Update your news preferences and get the latest news delivered to your inbox.