Su Oh's bid for an LPGA Tour card has faltered, but the Australian still has a chance after the fourth round of Tour School.
With one round remaining of the five-round marathon, Victorian Oh is tied-45th at even-par after a 73 in the fourth round.
She is five shots off the top-20 finish she needs to secure her playing card for 2016.
However a position from 21st to 45th tomorrow would give the former top amateur and member of Golf Australia's rookie squad of young professionals conditional status on the LPGA Tour next year.
China's Simin Feng has dominated the Tour School at Daytona Beach in Florida, and has all but secured her card already, leading the field by five shots.
Of the other Australians, Stacey Keating (tied-49th) is the next-best. Rebecca Artis and Emma De Groot missed the 72-hole cut.
In completing the full event, Oh and Keating have guaranteed their rights to play on the secondary Symetra Tour in 2016. Oh spent 2015 on that tour but struggled after a great start to her professional career that included a win at the Australian Ladies Masters on the Gold Coast.