WIth Bajin as coach, Osaka rose from number 72 to the very summit of the world rankings in a year, winning back-to-back Grand Slams at the US Open and Australian Open.
Osaka hired Bajin in 2017 and enjoyed a meteoric rise during the time they worked together.
She also thanked Bajin and wished him "all the best in the future".
Osaka posted a tweet on Monday that says she "will no longer be working together with Sascha".
"I will no longer be working together with Sascha", tweeted the USA -based Japanese 21-year-old.
No further information has yet been given.
Students go wild at school as Denver teachers strike over pay
There has been a wave of teacher activism in the United States since last spring, when teachers walked out in West Virginia. The district says schools will remain open during the strike and will be staffed by administrators and substitute teachers.
Less than a half-hour after Osaka's tweet, Bajin responded to her on Twitter.
Osaka, who grew up in the US and speaks little Japanese, melted hearts when she fought back tears after her emotional US Open win over her idol Williams as booing echoed around the stadium. "Thank you for letting me be part of this".
During that operation, a Chinese destroyer came within 45 yards of the U.S. warship, forcing it to maneuver to avoid a collision. The US is "determined to stir up trouble in the South China Sea, create tension and undermine peace", Hua said .
Liverpool manager Jurgen Klopp is taking the squad to the Spanish resort of Marbella for a warm-weather training break this week. I didn't train on Friday and I didn't sleep at the hotel either because they thought I might infect other players.
The move never materialised with the Parisians experiencing a managerial change but Fellaini has said Thomas Tuchel's arrival at the Parc Des Princes was not the reason he stayed in Manchester. "I sent a message to Edi after the Bordeaux match".
We are also expecting some type of health sensor and features while battery life is thought to be nearly exactly the same. That all sounds great, but there is one downside, and as this is Apple you can probably guess what that is.
But a comfortable win at Stadio Olimpico was on the cards as Dan Biggar kicked Wales to a 12-point lead in the first half hour. From that point, a lot of people will look to criticise us but you have to give Italy some credit for how they played.
Majorities of Millennials (74%), Gen Xers (63%) and Baby Boomers (54%) say the use of marijuana should be legal. Harris's career as a California prosecutor has been under scrutiny as she ramps up her presidential campaign.
2018 was a tough year for the gaming industry, and it doesn't look like the downward trend is going to let up anytime soon. Under the Blizzard Entertainment umbrella, the company still rakes in millions from its World of Warcraft MMORPG.
Katy Perry attends the 61st Annual GRAMMY Awards at Staples Center on February 10, 2019 in Los Angeles, California. Sources close to Perry said the shoes are part of a larger design line and were never meant to be offensive.
This media house does not correct any spelling or grammatical error within press releases and commentaries. The construction of the first Russian lunar base is set to begin in 2034 and continue in 2035.
Kentucky escapes with 71-67 win over Mississippi State
Much has changed in the SEC women's basketball power structure in recent years, and Mississippi State has been a big part of that. That's how deadly Mississippi State can be; this went from a close game to a historic blowout in the final 12½ minutes.
Cardi B Defends Her Grammy Win in Expletive-Filled Video
She won for her debut album " Invasion of Privacy ", beating out Nipsey Hussle , Pusha T , Travis Scott and the late Mac Miller . At first, some thought she was referring to Cardi's win, but Grande later clarified that it had "nothing to do w her".
Diana Ross gives emotional Grammys performance
Dressed in a flowing red gown, Ross was surrounded on stage by members of her family, including daughter Tracee Ellis Ross . In the video, Ross and Jaden sang her 1970 song " Reach Out and Touch (Somebody's Hand)" briefly as the crowd looked on.
‘I haven’t washed my hands in 10 years’
Really, I don't really wash my hands ever'. " I inoculate myself ." His co-anchors seemed shocked and one even asked for help. It's also important to wash your hands after handling raw meat, as this can harbor germs leftover from animal feces.
Toro Rosso reveal 2019 F1 vehicle
Williams will present its 2019 livery and new title sponsor later this afternoon, before Renault takes centre stage on Tuesday. The second Toro Rosso auto to be designed around the Honda power unit, the STR14 was launched online via a video on Monday.
Christian Hackenberg Underwhelms In AAF Debut
Twitter was happy to take aim at the former second-round National Football League draft pick as he floundered in the AAF. The league's first games, which aired Saturday on CBS, averaged 2.913 million viewers , according to Sports TV Ratings .