Osaka was the biggest revelation at this U.S. Open - who could be surprised at Novak Djokovic winning his 14th major championship Sunday? - but plenty else happened over what undoubtedly was as wild a Grand Slam tournament as there's been in years.
Playing on the same court where Pete Sampras claimed his 14th and final Grand Slam crown, Djokovic had endured more disappointment than joy on Arthur Ashe, mining just three titles from eight finals.
"But the guy's won a lot of Grand Slams, and he knows how to win them", Millman said after losing to Djokovic in the quarter-finals. The 31-year-old Serb has never been considered a once-in-a-generation talent, as have Roger Federer and Rafael Nadal, the ones above him in the trophy count.
Djokovic broke del Potro early in the set to take a commanding position, but del Potro later broke him back and looked on the verge of taking full control of the match's momentum.
It enabled Djokovic to go on and take the second-set tie-break following four unforced errors from Del Potro's forehand - including one on set point. While Djokovic, who defeated Juan Martin del Potro to win the men's title, rose to 3rd in the ATP rankings, Osaka made a jump of 12 places to acquire the seventh spot in WTA rankings.
Back from career-threatening wrist problems, Del Potro has shone throughout this tournament, but will have his work cut out to deny former world number one Djokovic if the Serbian reproduces the form he showed on Friday.
Djokovic, playing in his eighth final in NY and already the champion in 2011 and 2015, is now just three Slams behind Rafael Nadal and six back from the all-time record 20 held by Roger Federer.
This was not that day, although even at his absolute best he would have struggled to hold off Djokovic on this form. "I was a kid then; now I am much older", Del Potro added.
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But the Storm have yet to win on the road in the playoffs, despite posting the best road record in the regular season. I knew she was that elite level player and more importantly that elite level competitor that wanted to be the best.
Now he's backed that up at the U.S. Open, the fourth time in his career he won multiple majors in a season. "I think right now, what I'm feeling is very tired.so hopefully as that wears off I'll start feeling more happy".
The wealthiest of tennis' four grand slam events, the NY tournament has a rich history and boasted a record purse.
Nadal hobbled out of a semi-final match against Del Potro after two sets.
'I have utmost respect for what they have achieved on the court, but also the champions, role models they are off the court. I thought I came in today from the first point with a great intensity, great focus. Djokovic was able to win the tiebreak 7-4 to secure a two-set lead.
The 2.4 overnight rating is up 32% from a year ago (1.9 for Sloane Stephens and Madison Keys of the U.S.) and 79% higher than 2016 (1.4 for Angelique Kerber vs. Karolina Pliskova).
Speaking at the post game press conference, Australia's latest sporting hero was proud of how he performed, before pointing to criticism he was bound to receive from cyberbullies online.