As a brand ambassador for the Japanese carmaker, the 20-year-old Grand Slam champion will appear in global promotions and advertising which will support her as a rising tennis star, the company said in a statement.
What she didn't deserve was her accomplishment getting lost in the controversy that preceded it.
The Arthur Ashe Stadium crowd booed during the trophy presentation, dampening Osaka's moment.
Sadly, Osaka wasn't shedding tears of joy, which remains the most unfortunate aspect of the entire incident.
USTA president and CEO Katrina Adams, who defended Williams, was overheard apologizing to Ramos on the sidelines of Thursday's draw ceremony.
While Ramos is known as a stickler for the rules, the US team won't have to worry about coaching violations since captains sit courtside during Davis Cup matches and are permitted to give advice throughout the match. Her coach admittedly violated the first rule, and Williams dug her own grave by melting down over the warning.
nRamos wouldn't have had such thin skin and would've used better judgment before penalizing Williams a game, when she called him a "thief" - that's what passes for "abusing" an official these days? - after he really did steal a game from her. The double standards are clear.
But instead of talking about any of that, we are talking about point and game deductions. Ramos should add it to his reading list. "Because it's fast", she said. A true champion at her best.
Hurricane Florence: Storm force winds for North Carolina within hours
Heavy rains were forecast to extend into the Appalachians, affecting parts of Alabama, Tennessee, Kentucky and West Virginia. Emergency declarations were in force in Georgia, South and North Carolina, Virginia, Maryland and the District of Columbia.
No matter. Enough should've been enough.
But because a woman had the nerve, key word here being the nerve, to stand up to him, Ramos had to make her pay, and dearly did she pay, for it cost her what would have been her 24th grand slam title.
Williams received a second violation when she smashed her racket in frustration.
The match, however, ended disappointingly because of Serena's behaviour, because of her verbal abuse of the umpire, because of her coach signalling to her during play, and because of her smashing and breaking her racquet. Just calm, measured responses that were carefully considered.
"If you're an idiot reporter in the USA news and you're an apologist for Serena's behaviour it's (her reputation) enhanced, but for the rest of the reasonable population it's definitely damaged", Freedman said. "You definitely can't go back in time".
"It's not something that I have to think about".
Murray, however, told BBC Sport that Williams' accusations of sexism are "a bit far-fetched", adding: "I've seen a lot of people get called for coaching before, and you might have a grumble and stuff, but you get on with it". "So how do you take it as anything other than it being because she's a woman?"