And then the 22-year-old star rallied ... big time.
Osaka stormed back to win the second and third sets to claim her third Grand Slam singles title with a 1-6, 6-3, 6-3 victory.
From her performance to her advocacy -- Osaka wore a mask with the name of a different Black person who was a victim of racial injustice and police brutality to each of her seven US Open matches -- the sports world saluted the phenom.
Inspired by Kobe
Reaction from George Floyd's family
Family of George Floyd congratulates Naomi Osaka on her US Open win
Members of George Floyd's family sent a congratulatory message to Naomi Osaka after she won her second US Open title Saturday. Osaka has been speaking out against social injustice and police brutality over the past two weeks of the event.
LeBron, tennis stars congratulate Osaka
GREAT COMEBACK!! Congrats @naomiosaka! 🙏🏾✊🏾— LeBron James (@KingJames) September 12, 2020
Naomi Osaka for the win!!!! ✨🏆— Chiney Ogwumike (@Chiney321) September 12, 2020
used her platform beautifully AND won it all... LOVE TO SEE IT!@naomiosaka
Congratulations to @naomiosaka, the 2020 @usopen women's singles champion!— Billie Jean King (@BillieJeanKing) September 12, 2020
A tremendous Final by both players, with incredible effort by @vika7.
Our sport just keeps getting better! #USOpen https://t.co/FEKZlfE3cX
🎾 💪🏽 Yasssss Take a Moment!— nicoleariparker (@nicolearip) September 12, 2020
You did it!
🏆 🏆🏆🏆@NaomiOsaka wins #UsOpen2020
(Shoutout to @vichka35 for bringing the inner mama & fighting the good fight with all your ❤️) https://t.co/h4m53cryda
Oh yes @naomiosaka. Asked what message she wanted to send with the masks she wore bearing the names of Black ppl killed by police responds: "Well, what message did YOU get?" #USOpen pic.twitter.com/1aaYc5SEoi— Sherrilyn Ifill (@Sifill_LDF) September 12, 2020
Congratulations @naomiosaka What a performance from a set down in the finals. Thank you for your voice and impressive tennis.— James Blake (@JRBlake) September 12, 2020