Former women’s bantamweight champion  Ronda Rousey opened up about her UFC 193 knockout loss to  Holly Holm in an interview with Valeria Lipovetsky.  Rousey blamed the loss on having a concussion, a difficult weight cut, and a bad mouth guard. “My mouth guard was bad. I literally came into that fight concussed from slipping down some stairs already after all these years of concussions,” Rousey said.  ”Then, I had an absolutely terrible weight cut, which means you have less fluid in your brain to protect it.” On Wednesday, at the UFC 300 Media Day, Holm reacted to Rousey’s comments