Brittney Griner is finally breaking her silence on her return from Russia ... saying she's super grateful to be back in the United States -- while vowing to play in the WNBA again.
Griner released a statement on her Instagram page Friday morning ... thanking President Joe Biden and everyone else who helped get her out of Russian custody last week.
Griner shouted her wife, her agents, her reps, the WNBA and more in her note ... adding, "It feels so good to be home!"
"The last 10 months have been a battle at every turn," she wrote.