Naomi Osaka said she had no regrets and had done "the best that I could possibly do" after her Grand Slam comeback came to an abrupt halt at the Australian Open on Monday.

A single break proved enough for French 16th seed Caroline Garcia to win the opening set against her rusty opponent before dominating a second set tie-break to win 6-4, 7-6 (7/2) in the first round.

Osaka, who has won four Grand Slams, stepped away from tennis in September 2022, citing mental health concerns.