Two-time grand slam winner Naomi Osaka has appointed Belgian Wim Fissette as coach according to Kyodo news agency.
Osaka has been without a coach since September, when she split with Jermaine Jenkins following a disappointing defence of her US Open title.
Jenkins was himself a replacement for Sascha Bajin, who Osaka ditched in February, weeks after winning her first major at Melbourne Park.
She subsequently suffered early exits at the French Open and Wimbledon.
Former professional Fissette, 39, guided compatriot Kim Clijsters to three grand slam titles between 2009 and 2011 and has also worked with major winners Simona Halep, Petra Kvitova and Angelique Kerber.
