Daniel Cormier is still emotionally devastated after his UFC 241 loss to Stipe Miocic ... saying, "I am so sorry to all I have let down."
Of course, Cormier lost his heavyweight belt to Stipe after he was knocked out in the 4th round of their main event on Saturday night ... a fight D.C. was winning before things turned.
Now, Cormier has had a few days to process the loss and issued an emotional statement on social media.
"It’s been a couple of days and I can’t stress the disappointment," Cormier says .