The 19-year-old confessed to letting her mind wander about what it would be like to win a medal, especially after seeing Britain's men's gold medallist Justin Rose with his around his neck on Sunday.
"I kept asking my caddie: 'I wonder what it's like to stand on that podium, I wonder what it's like to be holding a medal'."
"If I end up holding the gold medal at the end of Saturday and standing on the podium, I think it'll be extra special.
"I don't know if I'd ever take that medal off, but it would bruise me a little bit if I was swinging with it."
Ko practised on the course on Sunday after joining the gallery to cheer on teammates Danny Lee and Ryan Fox, and believed the wind would be a major factor with those with an early tee time expected to get the best of the conditions before the breeze got up.
She is in the last trio on the course with Britain's Charley Hull and Sweden's Anna Nordqvist at 11.09am on Wednesday.