Osaka frustrated by lack of progress

Naomi Osaka has said that she "hates disappointing people" after sliding to a tough three-set loss to Spanish 10th seed Paula Badosa in the first round of the French Open on May 26.

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The four-time Grand Slam champion saved a set point in the opening set before dominating the tiebreak, but Badosa ran away with the second set to force a decider.

Osaka regrouped and broke early for a 2-0 lead only for Badosa to quickly pull level, landing the crucial break in the seventh game on her way to a 6-7 (1-7), 6-1, 6-4 win.

"It was a tough match," said Japanese star Osaka, who suffered an agonising loss to eventual champion Iga Swiatek in last season's second round, having held a match point.

"I think as time goes on, I feel like I should be doing better."

The former world No. 1 is now working with Patrick Mouratoglou, who was Serena Williams' long-time coach.