Undefeated no more. This is the new tag for Ronda Rousey after Holly Holm knocked her out during the second round of their UFC 193 matchup on Sunday in Melbourne, Australia.

According to Yahoo Sports, Holm showcased her aggression to give Rowdy a memorable defeat.

It added that Rousey was the aggressive fighter during the beginning of the game "looking for the right hold and taking head shots along the way." But Holm was able to see an opening 59 seconds after the start of the second round.

The winning fighter threw a kick on Rousey's head after the the latter stumbled during contact. This sent the former undefeated UFC fighter down on the canvas.

"Holm jumped on the prone Rousey, delivering several blows to her head before the referee intervened, ending Rousey's 12-fight unbeaten run and handing Holm the bantamweight title," added Yahoo Sports.

"She's won a lot of fights and imposed her will on a lot of fighters. So I expected her to be aggressive and impose her will on me," Holm said.

According to Sydney Morning Herald, Rousey was taken to the hospital after her knockout loss which caused the depression of the fighter.

It noted that Rowdy was also not able to speak to members of the media after the match since she suffered a split lip.

It was certainly one of the biggest fights in the UFC history among almost $9 million in ticket sales. This reportedly prompted the scheduling of another fight in Australia come March 20, 2016.

Holm, who has a record of 10-0 said that she prepared well for the fight and she had the right motivation to win.

"I have been on the losing side of a fight and wanted to avenge my loss. So for a champion like Ronda, who has gone out of her way to do great things, absolutely, she deserves a rematch. I don't look at this fight and think I've made it. I think I've still got some things to do," Holm said in the Sydney Morning Herald report.

It was surely a devastating loss for Ronda, who was looking forward to maintain her unstained record at the UFC.

In an Instagram post, Rousey expressed her gratitude to all her supporters and noted that she will be back.

"I just wanted to thank everyone for the love and support. I appreciate the concerns about my health, but I'm fine. As I had mentioned before, I'm going to take a little bit of time, but I'll be back," Rowdy wrote.

UFC President Dana White said in a TMZ report that there will certainly be a rematch between the two fighters.

"There will absolutely be a rematch. It's the fight that makes sense," he added.