Champions joined Eric Babolat in France launching racquet line designed for 4-12 year-old juniors.
Taylor Fritz reached the Roland Garros fourth round after defeating a French opponent and the home crowd.
The Italian vows to soldier on and has faith that his time will soon come.
Long running tournament begins July 29 with new format.
One of Carlos Alcaraz's biggest fans plays for an NBA title.
"How many Roland Garroses will I play? That's the question," Gael Monfils said after his withdrawal.
Novak Djokovic says he accepts the drama his controversial Kosovo comments can cause.
