Ko Jin-young sustained an ankle injury on November 1
World number one Ko Jin-young fears that she might miss this week's LPGA Tour Championship – and the possibility of a first prize – due to an injury.
Ko, 24, missed the past two events after injuring her ankle on the Taiwan Swinging Skirts LPGA on November 1.
This week's winner in Tiburon, Florida, USA, receives $ 1.5 million (£ 1.16 million), the highest prize in women's golf history and crowned Race to the Globe champion .
"I'm still worried," said Ko.
Speaking before the Tour Championship starts Thursday, the South Korean said that she had only practiced "maybe only one or two days on Monday and Tuesday".
She added that she still has some pain when she walks.
Ko will be the player of the year of the tour regardless of who wins the event, which runs until November 24, after winning four tournaments, including uding two majors.
The Race to the CME Globe is a competition of a season in which players accumulate points in each LPGA tournament and the top 60 get access to the final of the Tour Championship.
The player who wins the Tour Championship is called Race to CME Globe Champion.
England Jodi Ewart Shadoff, Georgia Hall, Charley Hull and Bronte Law are among the 60 players who will turn up in Florida.