The Japanese player said she thought the jeers were directed at her, and began to get a bit overwhelmed by the situation, having missed Williams's argument with the umpire.
The Women's Tennis Association (WTA) and Billie Jean King were among those to back Williams, with the latter calling out a "double standard" in the game.
Osaka received $3.8 million for her U.S. Open win, more than doubling her career winnings to date.
It was business as usual until the second set when, per CBS Sports, "Williams was given a warning from Ramos after the umpire determined her coach was attempting to instruct her using hand signals, which results in code violation".
Ramos told the paper that he avoided hitting the streets of NY after the controversial match to sidestep any potential "complicated situations". "The fact that I have to go through this is just an example for the next person that has emotions and wants to express themselves and wants to be strong woman".
"This is a bulls**t, for umpires being women or men doesn't matter", said the world No. 25.
Now, Adams and Ramos have come face to face in Zadar ahead of the United States team's Davis Cup tie against Croatia where the veteran official will oversee some of the matches.
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'I was really happy she said that'.
Portugese newspaper Tribuna Expresso reported that Ramos had avoided walking the streets of NY on Sunday to avoid any "complicated situations".
The chair umpire at the centre of the saga has spoken publicly for the first time since the match, saying he is "fine".
The anonymous source believes they have not been supported by the USTA on multiple occasions, adding that Ramos was "thrown to the wolves for simply doing his job and was not willing to be abused for it".
Australian former umpire Richard Ings also reported feelings of unrest.
"I'm fine, given the circumstances", Ramos told the Expresso, according to the Associated Press. "They are all fearful that they could be the next Ramos. Don't you worry about me", the 47-year-old is quoted as saying in the newspaper.
The International Tennis Federation has defended Ramos for his actions during the final.