Britain's Emma Raducanu says she is "learning to coach myself" as she prepares for the Transylvania Open in Romania this week.
The 18-year-old parted with coach Andrew Richardson after her US Open win and faces Polona Hercog on Monday after a first-round loss in Indian Wells.
Raducanu says she wants a mentor with experience of the WTA Tour.
"I don't think it's great to be dependant. You need to coach yourself. It's something I'm learning," she said.
Raducanu, who hopes to make an appointment before the 2022 season, trained with Johanna Konta's former coach Esteban Carril this week.