Japan's Osaka blames US Open tears on 'notorious' nerves

Naomi Osaka has put her US Open tears down to shredded nerves and her natural awkwardness, rather than the tantrum thrown by Serena Williams that overshadowed a historic Japanese win.

The 20-year-old melted hearts when she burst into sobs as boos rang out following her emphatic 6-2, 6-4 thrashing of Williams in a controversial New York final a little over a week ago.

But Osaka has refused to blame her childhood idol, who called chair umpire Carlos Ramos a "thief" in an astonishing rant triggered by a code violation for coaching that culminated in a docked game.

"I feel like there was just a lot of emotions," Osaka said in Tokyo on Monday.

"I couldn't really pinpoint it at the time, I just felt very overwhelmed."
"I don't feel like I would've liked to savour the moment more -- I think I do things my own way and everyone is different in their own way so I don't really have any regrets."
- 'Worst speech ever' -
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However, Osaka pointed to her nervous demeanour after winning her maiden WTA title at Indian Wells in March, where she blurted out: "Hi, I'm Naomi ... this is probably going to be the worst acceptance speech of all time."