Afterwards, Williams said Ramos had never taken a game from a man for calling him a thief and referenced Alize Cornet being given a code violation for changing her shirt on court earlier in the tournament as an another example of double standards within the game.
When a reporter asked Williams whether her mind had flashed back to her infamous tirade over a foot fault in the final at Flushing Meadows nine years ago, she replied: "I think it's just instantly, just like, 'Oh, gosh, I don't want to go back to 2004.' Forget 2009, you know". But as you'll see, Williams was the architect of her own demise...
"I'm telling you right now, I don't cheat to win". She briefly disputed that ruling, saying cheating "is the one thing I've never done, ever".
Her coach, Patrick Mouratoglou, later acknowledged the rule violation, but criticised the umpire for "creating drama", accusing him of screwing with a grand slam final. "Sascha was coaching every point too". However, in essence, the warning for her coach, not Williams the tennis player.
The Asahi Shimbun said on Twitter it would be printing an extra edition and distributing it in Tokyo.
"When a woman is emotional, she's "hysterical" and she's penalized for it", King tweeted. "When a man does the same, he's 'outspoken" and there are no repercussions".
The women's US Open final on Saturday ended with both the victor and loser standing on the court in tears and the crowd booing loudly-and the blame for such an weird conclusion rests squarely on the fragile ego of chair umpire Carlos Ramos. "More voices are needed to do the same".
On Sunday morning, the president of the National Organization for Women pointed out that "men stretch the rules all the time and are lionized for being "bad boys" and called for Ramos's dismissal.
Osaka rejected a question regarding Williams before holding up her trophy.
She then had a heated argument with chair umpire Carlos Ramos, which cost her a game.
Williams won $1.85 million as a US Open finalist.
"Serena is a champion & doesn't deserve it - the same way that Naomi is a champion & doesn't deserve this atmosphere for her first GS title!" "I have a daughter and I stand for what's right for her".
Despite the controversy there were many messages of support for Osaka, who became the first Japanese grand slam victor. Williams urged fans not to boo Osaka and protectively put her arm around her young opponent.
There was also the inevitable comparison made between how Ramos handled his duties in the final and how chair umpire Mohamed Lahyani intervened during Nick Kyrgios' second-round match. She was then forced to forfeit an entire game.
They both played superb tennis throughout the US Open.
"We already talked. We have a great relationship", Williams said of Giudicelli last month, laughing as she added, "Everything is fine, guys".