Lucia Bronzetti, of Italy, celebrates after winning against Naomi Osaka, of Japan, during the Madrid Open tennis tournament in Madrid, Spain.

Naomi Osaka, of Japan, leaves the court after losing to Lucia Bronzetti, of Italy, at the Madrid Open tennis tournament in Madrid, Spain.

Naomi Osaka, of Japan, reacts after throwing her racket during her match against Lucia Bronzetti, of Italy, at the Madrid Open tennis tournament in Madrid, Spain.

Lucia Bronzetti of Italy celebrates a point against Naomi Osaka of Japan during the Madrid Open tennis tournament in Madrid, Spain.

Patrick Mouratoglou, coach of Naomi Osaka of Japan, applauds during the match between Naomi Osaka of Japan and Lucia Bronzetti of Italy during the Madrid Open tennis tournament in Madrid, Spain.

Lucia Bronzetti, of Italy, returns the ball against Naomi Osaka, of Japan, during the Madrid Open tennis tournament in Madrid, Spain.

Naomi Osaka of Japan returns the ball against Lucia Bronzetti of Italy during the Madrid Open tennis tournament in Madrid, Spain.

Naomi Osaka of Japan returns the ball against Lucia Bronzetti of Italy during the Madrid Open tennis tournament in Madrid, Spain.

Lucia Bronzetti of Italy serves against Naomi Osaka of Japan during the Madrid Open tennis tournament in Madrid, Spain.

Naomi Osaka, of Japan, returns the ball against Lucia Bronzetti, of Italy, at the Madrid Open tennis tournament in Madrid, Spain.