Amanda Nunes’ UFC Return Explained: Retirement, Delay and Title Shot

Amanda Nunes is returning to the UFC after more than three years away, and she isn't easing herself back into competition. The former two-division champion will challenge Kayla Harrison for the women's bantamweight title at UFC 334 on 14 November at Madison Square Garden.

But why did Nunes retire, what delayed her comeback, and how has she landed an immediate championship opportunity? Here's how one of women's MMA's biggest fights finally came together.

Why did Amanda Nunes retire from the UFC in 2023?

Nunes shocked the MMA world when she announced her retirement at UFC 289 in June 2023, immediately after dominating Irene Aldana over five rounds.

There was no dramatic defeat or sudden fall from the rankings. The Brazilian walked away as the reigning bantamweight and featherweight champion, having already established herself among the sport's greatest fighters.

Her explanation was refreshingly straightforward. After years of demanding training camps and championship fights, she wanted more time with her family and a break from the pressure of competition.

Nunes later acknowledged feeling burnt out. Stepping away gave her the chance to recover physically, recharge mentally and enjoy life beyond the Octagon.

She had already beaten major names, including Ronda Rousey, Cris Cyborg and Valentina Shevchenko. There was little left to prove, although retirement clearly wasn't the end of her competitive ambition.

What convinced Nunes to make her UFC comeback?

The desire to compete gradually returned. However, Harrison's arrival in the UFC gave Nunes a particularly tempting challenge.

The pair previously trained at American Top Team in Florida, meaning their rivalry carries more history than an ordinary championship matchup.

Nunes has explained that she was already considering another fight before Harrison joined the promotion. Watching her former teammate climb towards the bantamweight championship helped turn those thoughts into a genuine comeback.

And when Harrison captured the belt, the opportunity became even more appealing.

For Nunes, the attraction is personal and competitive. She wants to reclaim her former title while testing herself against somebody familiar with her fighting background.

Their shared history adds another twist. Nunes previously acknowledged that the prospect of facing Harrison influenced her decision to leave American Top Team and establish her own training setup.

That motivation is separate from the UFC's interest in promoting a blockbuster encounter between two established names.

From retirement to UFC 334 – the comeback timeline

Nunes' journey back to the Octagon has taken several unexpected turns. Here's how the main events unfolded.

The extended wait means Nunes will enter her comeback fight without having competed professionally since her final title defence against Aldana.

Why was Nunes vs Harrison postponed in January?

The original meeting was scheduled for UFC 324 on 24 January 2026 in Las Vegas.

Unfortunately, the comeback hit an unexpected obstacle.

Harrison withdrew after suffering a neck injury that required surgery, forcing the UFC to postpone the championship contest. Sean O'Malley versus Song Yadong subsequently took its place as the co-main event.

Nunes had already completed much of her preparation, making the postponement particularly frustrating.

Rather than pursue an interim championship, however, she made her position clear. Her priority was fighting for the undisputed bantamweight title, not collecting a temporary belt.

The UFC subsequently rearranged the contest for November.

Importantly, Harrison's previous medical withdrawal should not be confused with her current status. The champion has since spoken publicly about her return and is scheduled to defend her title at UFC 334.

How did Nunes earn an immediate UFC title shot?

Nunes hasn't fought since 2023, so her immediate championship opportunity naturally raises eyebrows.

The explanation lies in her exceptional record, previous dominance at bantamweight and the appeal of facing Harrison.

There is no automatic rule guaranteeing former champions a title shot after retirement. The UFC made this matchmaking decision based on the circumstances surrounding both fighters.

Harrison, meanwhile, earned her championship by submitting Julianna Peña at UFC 316 in June 2025. The two-time Olympic judo gold medallist also arrived in the promotion with an impressive reputation from her PFL career.

From the UFC's perspective, the pairing offers something special: an established champion making her first title defence against a returning legend, with their shared training history adding another layer of intrigue.

There's a clear sporting argument, alongside the commercial appeal of bringing two recognisable names together on a major New York card.

What makes Harrison such a dangerous opponent?

Harrison brings elite grappling credentials, physical strength and a proven ability to control opponents on the canvas.

Nunes offers a different threat. Her powerful striking, finishing instincts and well-rounded MMA skills helped define her championship reign.

But there is one enormous unknown.

Can Nunes reproduce her championship-level performances after more than three years without a competitive fight?

Training footage and past achievements cannot fully answer that question. Harrison also faces the demands of returning to competition after her own lengthy absence.

For anyone assessing the UFC 334 betting markets, the key considerations include:

• Wrestling exchanges: Can Nunes prevent Harrison from establishing control on the ground?
• Striking distance: Will Nunes find enough space to land her powerful combinations?
• Fight rhythm: How quickly can the returning former champion adjust to competitive intensity?
• Five-round stamina: Which fighter can maintain their preferred approach if the contest reaches the championship rounds?

These are tactical questions rather than guarantees about the outcome. Nunes' incredible legacy matters, but it cannot substitute for evidence of her present form.

What happens next at UFC 334?

The championship clash is scheduled as the co-main event, with Ciryl Gane defending the heavyweight title against Josh Hokit in the headline fight.

That gives Madison Square Garden a two-title card, although the women's bantamweight contest has an intriguing storyline of its own.

Joselyne Edwards has also been reported as the confirmed backup fighter for Harrison versus Nunes. Her role is a precaution should either scheduled competitor become unavailable, not an announcement that the matchup has changed.

Nunes has already built a remarkable legacy. Now comes a completely different challenge: proving that the fighter who once ruled the division can still compete with its current champion.

And that's what makes this comeback worth watching.