Brittney Griner's wife says the WNBA star has hit the lowest moment of her life while locked up in Russia ... saying the basketball player has told her, "I feel like my life just doesn't matter."
Cherelle Griner nearly came to tears while discussing the state of her wife with Gayle King this week ... explaining she's never seen Brittney reach such a dark place before.
"BG's at her absolute weakest moment in life right now," Cherelle said. "She's very afraid about being left and forgotten in Russia.