Holly Holm dominated the sport of women’s boxing for several years.

Now, Holm has the opportunity of a lifetime when she faces Ronda Rousey for the bantamweight belt at UFC 193 this November. The bout was moved up from January after an injury to welterweight champion Robbie Lawler.

The 33-year-old Holm (9-0) is just two fights deep into her UFC career, but officials saw enough to place her in front of Rousey, who has bested several unbeaten challengers in recent defenses.

“At first, I was nervous,” said Holm, during a recent interview on UFC Tonight. “Now, I’m thinking, ‘Why wait? Let’s do it now.

“Fighting is never the easy route. You have to take the challenges. I’m going to go in there to win. I have a lot of work to do.”

After winning the Legacy FC title in 2014, Holm signed with the UFC. She scored a split decision over Raquel Pennington in her debut this past February, while she added a decision over Marion Reneau in July. Prior to that, she had scored six finishes in her MMA career.

Despite her background in boxing, Holm knows she can’t just rely on one tool to best Rousey.

“I can’t just use boxing footwork,” she said. “I have to be ready for a lot of situations. I can’t just let her punch me and let her put me on the ground. I have to use footwork, but I need to work on a game plan to give her problems.”

Holm has also come to realize that this is the biggest fight of her career, adding “it can’t get any bigger than this. She’s been the most dominant champion of any fighter ever. It’s huge.”