Naomi Osaka said Friday on social media she is "back" on the tennis court after making a tearful U.S. Open exit two months ago declaring she was taking a break.

The four-time Grand Slam champion from Japan tweeted two photos with her holding a racquet on a court, one of them showing her wearing workout apparel.

"Kinda rusty but feels good to be back," Osaka tweeted with the photos. "I really want to say thank you everyone for all the kind messages, I really appreciate it."