"There's no one more experienced, no one more knowledgeable, no one more capable as an umpire than Carlos Ramos".
Even the International Tennis Federation (ITF), which stood by the judges, waited 48 hours before announcing a position.
In very bad scenes after Osaka's historic grand slam triumph, the 20-year-old burst into tears as fans voiced their displeasure at the way Serena had lost.
The US Open fined Williams $17,000 for her protestations, although she collected $1.85 million for finishing runner-up at Flushing Meadows.
"It is understandable that this high profile and regrettable incident should provoke debate", the ITF added.
"The art of editorial cartooning is a visual dialogue on the issues of the day, yet this cartoon grossly inaccurately depicts two women of colour at the US Open, one of the grandest stages of professional sports". Ramos need not have stuck so closely to the rule book as he did because his primary duty is to help players across choppy waters.
"At the time, I did ... think that they were booing at me".
Serena Williams accuses US Open umpire Carlos Ramos of sexism
The multiple grand slam victor Victoria Azarenka said: "If it was a men's match, this wouldn't happen like this. Serena Williams was docked a game by an umpire after a series of controversial calls.
Tennis great Billie Jean King backed the American but Margaret Court, whose major wins record Williams was trying to equal on Saturday, expressed little sympathy for the 36-year-old.
"You're told to just turn around and try to focus, so I tried to do that, but in my mind I was sort of...like, I really wanted to know what was going on".
The report also cited an anonymous source who said officials were considering a boycott of future matches involving Williams. When she called chair umpire Carlos Ramos a "thief," demanded an apology and grew emotional as she said she never cheats and wants to set an example for her daughter, he docked her a game at a critical juncture.
Speaking to Tribuna Expresso in his native Portugal, Carlos Ramos said: "I'm fine, given the circumstances".
According to McEnroe, Ramos should not have given Williams a violation for breaking her racquet and should have warned her early on about what would happen if she did not move on. You are the U.S. Open champion.
While defending Ramos as a "stickler for the rules", King also believes he was partly at fault for "aggravating" the situation and reiterated her belief that tennis still treats women differently to men.
Widmaier said the feeling at USTA is that there needs to be a push to ensure consistency in the application of the rules, including coaching violations and shirt changes by women players. The WTA issued a statement that appeared to side with Williams' accusation of sexism, saying the same standards should be applied to men and women and "We do not believe this was done last night".
It is tradition that in addition to the finalists, the chair umpire who oversees the final is also acknowledged at the end of the match.