Osaka also became the first woman since 2001 to win both of her first two Grand Slam finals, ESPN reported. Jennifer Capriati won the Australian and French opens in 2001. Before she reached the U.S. Open final against Serena Williams last year, Osaka had never made it past the fourth round of a major tournament.
Osaka's win at the U.S. Open was overshadowed by Williams' argument against chair umpire Carlos Ramos, ESPN reported. Ramos issued point and game penalties against Williams, which took away the focus from Osaka's victory.