Naomi Osaka's 'Personal Time' Starts with L.A. Grocery Run After Wimbledon Withdrawal

Moments after Naomi Osaka announced she was withdrawing from Wimbledon to focus on "personal time" ... the tennis superstar was already making good on her word, hitting up a fancy L.A. grocery store with a friend.

Osaka -- sporting a COVID mask -- hit up Monsieur Marcel Gourmet Market, Bistro & Seafood Market.

So, no on French Open ... but yes on French food!

On her way out, Osaka was asked about her decision to take time away from pro tennis to focus on her mental health ... but the 23-year-old wasn't talking.

After all, her team already put out a statement explaining her position -- saying, "Naomi won't be playing Wimbledon this year. She is taking some personal time with friends and family."

"She will be ready for the Olympics and is excited to play in front of her home fans."

In the meantime, Osaka seemed relaxed ... sporting a vintage "Mulan" t-shirt and driving off in her baby blue Ford Bronco.