- Tag results for Naomi Osaka
Cibulkova will get her first crack at newly crowned US Open champ Osaka after squeaking into the last 16 of the Pan Pacific Open.
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.
Nissan said the passionate videogame player and Beyonce fan would appear in global promotions and advertising in its three-year contract.
Osaka's victory also challenges Japanese attitudes about identity in a homogeneous culture that is being pushed to change.
The 20-year-old melted hearts when she broke down sobbing after thrashing her idol 6-2, 6-4 to become Japan's first Grand Slam singles champion in New York last weekend.
Williams, whose bid to match all-time record of 24 Grand Slam titles was at least temporarily thwarted by Naomi Osaka, made no bones about her belief that sexism played a role in the code violations.
National pride - at least for now - is overriding questions of cultural identity and what it means to be Japanese.
Though Osaka's moment of glory was overshadowed by Serena Williams' meltdown during her stunning 6-2, 6-4 upset of her idol at the weekend, the 20-year-old demonstrated she has the game.
National Organization of Women president Toni Van Pelt weighed in with a statement calling for the USTA to sever any ties to Ramos for "a blatantly racist and sexist move".
Serena Williams's claims of sexism during her spectacular US Open final meltdown follows similar controversies at the season's three other Grand Slams.
US Open champion Naomi Osaka tweeted Sunday she was "grateful" for the chance to take on childhood hero Serena Williams for her first Grand Slam title.
In an age of robotic press conferences, Osaka breezes in, confesses to being fond of sweating, eating 500 bagels a day and having only one friend.
Naomi Osaka shows killer instinct, soft heart in Grand Slam breakthrough against idol Serena Williams
Osaka, 20, looked nothing like a kid as she took the court aiming to become Japan's first Grand Slam winner.
Prime Minister Shinzo Abe led the praise, taking to Twitter to congratulate Osaka after her 6-2, 6-4 win in New York.
The 36-year-old was handed a code violation for coaching, a penalty point for racquet abuse and a game penalty for calling umpire Carlos Ramos a liar and a thief.