SHOWS: YOKOHAMA, JAPAN (SEPTEMBER 13, 2018) (REUTERS - ACCESS ALL) 1.
(SOUNDBITE) (English) U.S. OPEN TENNIS CHAMPION, NAOMI OSAKA, SAYING: "No, I mean for me, I don't feel sad because I wouldn't even know what I'm expected to feel.
Because I feel like since it was my first final, and it was my first Grand Slam victory, overall I felt really happy and I know that I accomplished a lot.
And I don't think I even thought about feeling sad because there is no experience for me to draw on on any other Grand Slam final wins." 2.
WHITE FLASH 3.
(SOUNDBITE) (English) U.S. OPEN TENNIS CHAMPION, NAOMI OSAKA, SAYING: "I mean, I don't really think too much about my identity or whatever.
For me, I'm just me.
And I know the way that I was brought up, I don't know, people tell me I act kind of Japanese so I guess there is that.
But other than that, if you were talking about my tennis, I think my tennis is very, not very Japanese." STORY: After arriving in Japan on Thursday (September 13) from Los Angeles, U.S. Open champion Naomi Osaka said her opponent Serena Williams' row with the umpire during the final had not made her sad largely because she had no idea how she was supposed to react.
Osaka's breakthrough triumph in New York was overshadowed by an explosive row between Williams and umpire Carlos Ramos which resulted in the 23-times Grand Slam champion being docked a game and fined $17,000.
One of the most controversial Grand Slam finals of all time divided tennis and triggered a debate about sexism in the sport, fuelled by Williams' assertion that Ramos would not have dealt with a male player in the same way.
Meanwhile in Japan, Osaka's victory raised questions with some Japanese about national identity.
Osaka is the daughter of a Haitian father and Japanese mother and left Japan when she was three to be raised in New York and Florida.