Swiatek won the match 6-4, 6-0.
The rankings are set to be released on Monday.
Saturday’s win for Swiatek was historic – in more ways than one.
And she will be the first Polish player – man or woman – to reach the top ranking in singles tennis.
“Watching your journey is really incredible,” Osaka told Swiatek after the match. “I hope you continue having fun.”
In her own speech after Saturday’s match, Osaka thanked her supporters and fans, adding “I know I haven’t been in this position for a little minute.”
“I know this isn’t the outcome that you guys wanted but, I don’t know, I’m having a lot of fun up here so I hope that I can keep working hard and get more opportunities to be in a situation like this again, “she said.
Osaka also thanked her team for their ongoing support, including “after the things that happened like two weeks ago.”
“They’re kind of like the rock that stays by my side. I just thank you guys so much,” Osaka said.
“Naomi, you suck,” the Spectator appeared to yell out following the first game of the match, a comment that brought the tennis player to the Tears on the court. It is unclear if that Spectator was identified and removed from the venue. Osaka ultimately lost the match in straight sets.