Naomi Osaka's first match since splitting with her coach ended with a humiliating defeat

  • Naomi Osaka just lost her first match since splitting with her coach Sascha Bajin.
  • The 21-year-old, who had just won the 2019 Australian Open, was dumped out of the Dubai Tennis Championships in the very first round on Tuesday.
  • Osaka was beaten in straight sets 6-3, 6-3 by the unseeded French player Kristina Mladenovic.
  • Osaka made errors and failed to build any momentum in the match, before getting dumped out of the Dubai tournament.
  • Mladenovic now progresses to the next round on Wednesday, with a place in the quarter-final up for grabs. Osaka, meanwhile, has plenty of time to regroup and rethink her next move.

Naomi Osaka suffered a humiliating defeat in her first match since splitting from her coach Sascha Bajin.

Osaka's shock announcement that she had parted ways with Bajin stunned the tennis industry last week. The New York Times tennis journalist Ben Rothenberg even wrote that "the reasons for the split were unclear," adding that the news was "surprising."

Osaka and Bajin enjoyed a wildly successful ride in women's tennis, but ahead of the Dubai Tennis Championships this week Osaka said she left the trainer because she did not want to sacrifice her own happiness.

Her first round match against Kristina Mladenovic would be the first time Osaka played since parting with Bajin, and her first match since winning the 2019 Australian Open last month.

But, for Osaka, the Mladenovic match on center court at the Aviation Club Tennis Centre could not have gone much worse on Tuesday. She lost in straight sets 6-3, 6-3 against an athlete she was expected to beat.

It was a poor display from Osaka throughout, who failed to build any momentum winning only a maximum of five points in a row compared to Mladenovic's eight, and serving five double faults.

Mladenovic herself was a far more competent server with four aces and 56% first serve points won.

Watch the winning shot right here, which the commentator called "a very comfortable finish" for Mladenovic.

Osaka may have been a back-to-back Grand Slam champion and the newest number one in women's tennis, but Mladenovic kept her cool and secured her very first win over a woman ranked atop the world rankings.

For Osaka, dumped out of the Dubai tournament in the very first round, it's time to re-group and re-think before the Indian Wells Masters in California next month, while Mladenovic progresses to the next round in Dubai.

She plays Carla Suarez Navarro on Wednesday, with a quarter-final place at stake for the winner.

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Scenes from the 2019 Australian Open
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Scenes from the 2019 Australian Open
Barbora Strycova of the Czech Republic bites the net in frustration during her first round match against KazakhstanÅfs Yulia Putintseva at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 14, 2019. (AP Photo/Mark Schiefelbein)
Britain's Kyle Edmund serves to Tomas Berdych of the Czech Republic during their first round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 14, 2019. (AP Photo/Andy Brownbill)
Spain's Rafael Nadal serves to Australia's James Duckworth in their first round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 14, 2019. (AP Photo/Aaron Favila)
Petra Kvitova of the Czech Republic makes a backhand return to Slovakia's Magdalena Rybarikova during their first round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 14, 2019.(AP Photo/Kin Cheung)
Britain's Andy Murray reacts during his first round match against Spain's Roberto Bautista Agut at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 14, 2019. (AP Photo/Andy Brownbill)
Britain's Andy Murray reacts during a press conference following his first round loss to Spain's Roberto Bautista Agut at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan. 15, 2019. (AP Photo/Kin Cheung)
Tennis - Australian Open - Melbourne Park, Melbourne, Australia - January 10, 2019 - Japan's Naomi Osaka trains. REUTERS/Edgar Su TPX IMAGES OF THE DAY
MELBOURNE, AUSTRALIA - JANUARY 24: A detail as sweat drips from the brow of Rafael Nadal of Spain in his Men's Singles Semi Final match against Stefanos Tsitsipas of Greece during day 11 of the 2019 Australian Open at Melbourne Park on January 24, 2019 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan celebrates after winning championship point in her Women's Singles Final match against Petra Kvitova of Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Julian Finney/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 25: Samantha Stosur of Australia plays a forehand in her Women's Doubles Final match with Shuai Zhang of China against Timea Babos of Hungary and Kristina Mladenovic of France during day 12 of the 2019 Australian Open at Melbourne Park on January 25, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 26: Petra Kvitova of the Czech Republic plays a backhand in her Women's Singles Final match against Naomi Osaka of Japan during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 23: Milos Raonic of Canada serves in his quarter final match against Lucas Pouille of France during day 10 of the 2019 Australian Open at Melbourne Park on January 23, 2019 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 23: Serena Williams of the United States looks on in her quarter final match against Karolina Pliskova of Czech Republic during day 10 of the 2019 Australian Open at Melbourne Park on January 23, 2019 in Melbourne, Australia. (Photo by Cameron Spencer/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 27: Novak Djokovic of Serbia celebrates after winning championship point in his Men's Singles Final match against Rafael Nadal of Spain during day 14 of the 2019 Australian Open at Melbourne Park on January 27, 2019 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)
Japan's Naomi Osaka holds her trophy after defeating Petra Kvitova of the Czech Republic during the women's singles final at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 26, 2019. (AP Photo/Kin Cheung)
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