After an injury-induced lay-off the 22-year-old is back to represent Team GB in the Billie Jean King Cup in Malaga ...
A deal to hire Yutaka Nakamura, who previously worked with Maria Sharapova and Naomi Osaka, is not yet signed off.
After struggling with illness in his opening match, the 21-year-old's throwback sports accessory helped him stay alive at the ATP Finals.