"I think that she's going to come back. I think she wants to prove a point to everybody. No one does underdog better than Ronda Rousey. She likes that feeling. She likes having to prove something to people. It's going to be insane. I think it's going to be real good."
Rousey's fight with Holm was first loss in the octagon, but as an Olympic bronze medallist, she's faced heartbreaking losses before on the biggest stages in the world.
Despite winning two gold medals in a row, Harrison has suffered defeats in her career and losing never gets any easier no matter when or where it takes place.
So Harrison can relate to Rousey's internal torment that has undoubtedly eaten away at her over this past year she's been on the sidelines biding her time before returning to the Octagon.
From her experience with Rousey in the past, Harrison has seen the former women's bantamweight champion get knocked down before but each and every time she got back up.
Harrison expects the same out of Rousey when she faces Nunes on Friday night in Las Vegas.
"For me, I'm excited for her personally. Because I think that we've all had losses, everybody loses, everybody has a defeat and it can haunt you," Harrison said. "I know from personal experience when I lose to a rival and I don't have an opportunity to fight them again for a while, it really just weighs on me for a while.
"So for her to be able to go out and show the world that she is a fighter, she is someone who can come back from defeat is going to be exciting and thrilling and not going to be one many people are going to miss."