Naomi Osaka’s new struggles continued Tuesday with an early exit at the Nationwide Financial institution Open up.

The 4-time Grand Slam champion retired from her initially-spherical match with a back injury. She was trailing 7-6 (4), 3- against Estonia’s Kaia Kanepi when she withdrew from the contest.

"I felt my again from the get started of the match, and in spite of hoping to force as a result of it, I just wasn’t capable to nowadays," Osaka claimed. "I’d like to shell out credit to Kaia for enjoying perfectly and want to would like her all the very best for the rest of the event."

Entering the event, Osaka had been eradicated from her past a few competitions in the initial or second spherical, like a straight-sets reduction to Coco Gauff at very last week’s Mubadala Silicon Valley Typical. That was her 1st event since the French Open up as she recovered from an Achilles injuries.

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Naomi Osaka rests in the course of a match versus Kaia Kanepi of Estonia, during the Nationwide Lender Open tennis event in Toronto, on Tuesday, Aug. 9, 2022.  (Christopher Katsarov/The Canadian Press by means of WHD)

Prior to that run, she experienced her finest event of the year producing it to the closing of the Miami Open up in early April right before shedding to top rated-rated Iga Swiatek.

The 31st-rated Kanepi will upcoming engage in No. 8 Garbine Muguruza of Spain.

In other matches, 10th seeded Gauff defeat fellow American Madison Brenglem 6-1, 6-3 China's Zheng Qinwen acquired past Canada's Rebecca Marino, 3-6, 7-6 (5), 6-4 Italy's Camila Giorgi defeated ninth-seeded Emma Raducanu of England, 7-6 (), 6-2 and Bianca Andreescu of Canada conquer Daria Kasatkina of Russia, 7-6 (5), 6-4. Elise Mertens of Belgium, Sara Sorribes Tormo of Spain, Ajla Tomljanovic of Russia, Amanda Anisimova of the United States, and Zhang Shuai of China also state-of-the-art.

NICK KYRGIOS DEFEATS SEBASTIÁN BÁEZ IN TWO SETS Following CITI Open VICTORY

Naomi Osaka is tended to by a coach for the duration of a match against Kaia Kanepi of Estonia, all through the Nationwide Financial institution Open tennis event in Toronto, on Tuesday, Aug. 9, 2022.  (Christopher Katsarov/The Canadian Push through WHD)

Osaka struggled with unforced faults and had four of her 5 double faults in the initially established. She received the initially game with the support of a few unforced problems from Kanepi, but the 4-time Grand Slam champion misplaced her momentum right after likely up 2-1.

Kanepi won 4 of the subsequent seven online games to go up 5-3. From there, Osaka experienced to combat her way out of two established-issue alternatives from Kanepi. With a combine of a strong backhand and multiple faults from Kanepi, Osaka was in a position to tie it up and mail the set to a tiebreaker.

With the tiebreaker tied 3-3, Kanepi turned up her level of participate in taking 4 of the up coming five points as Osaka handed her set position on a shot earlier the baseline. Kanepi designed on that momentum in the next set, taking edge of Osaka’s mishaps and firing sharp forehands past the Japanese star.

Soon after hitting her next ace of the match earlier in the last video game, Kanepi closed out with a robust serve that Osaka returned large and broad.

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Naomi Osaka reacts all through a match from Kaia Kanepi of Estonia, throughout the Nationwide Financial institution Open up tennis event in Toronto, on Tuesday, Aug. 9, 2022.  (Christopher Katsarov/The Canadian Press by using WHD)

Andreescu received this event in 2019 prior to getting the U.S. Open title in what was a breakout yr for the 22-yr-old. She hasn’t received a match since, obtaining battled by accidents and having a "psychological crack" at one particular level in 2021. Andreescu’s lone last physical appearance this yr has been at the Undesirable Homburg Open wherever she fell to Caroline Garcia.

Andreescu will engage in Alize Cornet of France in the second round.