- Tag results for US Open
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.
Barbora Strycova struck down Serena Williams' 'sexism' charge against Umpire Carlos Ramos during her US Open final match.
Ramos gave Williams three code violations in her straight-set loss to Naomi Osaka last weekend, and the American great argued that she wasn't being treated the same as some male players.
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.
Serena Williams was deducted a point and received a USD17,000 fine, stirring the tennis world and sparking a broader debate about double standards toward men and women in the sport.
Navratilova said Serena Williams was wrong in her outburst at the US Open women's finals even though she agreed there is a double standard.
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.
Australian Open tournament director Craig Tiley said coaching, which is allowed a Women's Tennis Association events but not at men's or Grand Slam tournaments, remained a grey area.
National pride - at least for now - is overriding questions of cultural identity and what it means to be Japanese.
Djokovic clinched his third US Open title on Sunday with a 6-3, 7-6 (7/4), 6-3 triumph over del Potro, taking him level with Pete Sampras's mark of 14 Grand Slams.
Djokovic, playing in his eighth US Open final, delivered a businesslike 6-3, 7-6 (7/4), 6-3 victory over third-seeded Juan Martin del Potro of Argentina.
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.