Naomi Osaka says winning the US Open last month was a "bittersweet" moment and "not the happiest memory" following Serena Williams' on-court outbursts.
The 20-year-old became the first Japanese player to win a Grand Slam when she beat the American 6-2 6-4.
But the final at Flushing Meadows was overshadowed when Williams called umpire Carlos Ramos a "thief" and later accused him of sexism.
"There's a lot of stuff I want to say about how I felt," said Osaka.
"For me, I don't know, I don't know, the memory of the US Open is a little bit bittersweet.