Cris "Cyborg" Justino says the fact Ronda Rousey considered suicide after her loss to Holly Holm proves she has a "weak mind."
We had initially asked Cyborg if she thought Miesha Tate had crossed the line by bringing up Rousey's post-fight depression on "TMZ Sports" Monday ... and that's when Cyborg went in.
"When you fight, you can lose, you can win. It's a sport. You cannot think you want suicide because you lose one fight."
"Some people handle it better than others."
As for Rousey, she previously said she's PROUD about going public about the situation -- saying there's nothing to be embarrassed about and she hopes she can help other people who suffer from depression.