Michael Joyce, who coached Maria Sharapova and Victoria Azarenka, joins USTA player development.
The American has decided he does not want to travel without his family.
The Japanese megastar has lined up another big-time gig.
USPTA will provide free access to USPTA division conferences and the USPTA World Conference to a select number of ATA and HBCU coaches.
The American gave his mom, a former WTA star, props after his win on Saturday night in Delray Beach.
Kyle Edmund, a 2018 Australian Open semifinalist, won't be making the trip to Melbourne.
The 19-year-old American star announced the news in the comments of an Instagram post.
