Conor McGregor's arrest and Max Holloway's weight struggles leave much-hyped UFC 223 card a miserable mess

The original card had shaped up as the best of the year and UFC President Dana White said it was trending toward the best pay-per-view buy rate since McGregor's last fight

Max Holloway failed to make weight, cancelling the main event of UFC 223 and creating further upheaval to the promotion following criminal charges against star Conor McGregor.

Holloway had agreed to fight Khabib Nurmagomedov on Saturday on just six days' notice after original challenger Tony Ferguson injured a knee. But Holloway was unable to reach the weight limit for the bout Friday in New York and was ruled out by the UFC medical team.

Holloway apologized on Twitter to Nurmagomedov, saying he wants "to keep going but they are stopping me. Sorry to your team and the fans."

UFC was scrambling to find a last-second sub for Holloway and headline a sold-out Barclays Center in Brooklyn.

Holloway already was the 145-pound champion and was trying to become a two-division champ by beating the undefeated Nurmagomedov in the 155-pound title fight. Holloway and Nurmagomedov were fighting for the lightweight title left vacant by McGregor's nearly 18-month absence.

The original card had shaped up as the best of the year and UFC President Dana White said it was trending toward the best pay-per-view buy rate since McGregor's last fight at UFC 205.

But the backstage melee McGregor allegedly instigated instead has forced the removal of three fights because of injuries from the attack. Artem Lobov, a close friend of McGregor's, was pulled from the card for his involvement. Michael Chiesa and Ray Borg were hurt in the mayhem and forced off the card.

McGregor faces three counts of assault and one count of criminal mischief. Video footage appears to show the promotion's most bankable star throwing a hand truck at a bus full of fighters Thursday after a news conference at Barclays.

With Holloway out of the mix, UFC must look elsewhere. Former UFC lightweight champion Anthony Pettis was available after his fight against Chiesa fell through. Paul Felder, a Philadelphia-born actor-turned-MMA fighter, was another lightweight on the main card who offered to fight Nurmagomedov but his request was denied.

Felder, who has won three straight fights and five of six, wrote on Twitter that the state athletic commission said he was not ranked high enough to earn the title shot.

"I tried to get it. Commission is stopping it," he tweeted.

So what's left?

There's not much to promote on the undercard and what's left could make for the fewest fights on a pay-per-view in recent history.

The sliver of good news is the co-main event would get bumped to headline status, and it's a doozy: Rose Namajunas defends the 115-pound UFC strawweight championship against Joanna Jedrzejczyk in a rematch from their fight in November at Madison Square Garden.

Namajunas (17-3) used a devastating left that dropped Jedrzejczyk (14-1) in their first fight and the Colorado-based champ finished her with a series of lefts in a decisive first-round victory.

Namajunas is billed as "Thug" and brought gasps a few years back when she shaved her long, blonde locks in favour of a cropped cut that resembled Ripley in "Aliens." She choked back tears at the Garden when White slapped the championship belt over her shoulder and fans drowned her out with cheers as she tried to put into words what the victory meant.

The victory not only ended Jedrzejczyk's undefeated run, but she failed to tie Ronda Rousey for the UFC women's record of six straight successful title defences.

UFC has spent the last 18 months craving a new box-office star that can carry the promotion in 2018 and beyond while the reliable fan favourites are sidelined.

Jon Jones is facing a potential four-year ban because of a failed drug test. McGregor's last fight was against a bus. Rousey quit to join WWE and makes her debut Sunday at WrestleMania. Former UFC heavyweight champion Brock Lesnar headlines 'Mania. White has said the box-office titan who last fought at UFC 200 should return to the promotion this year.

Namajunas, who was on the bus McGregor attacked, had fans this week at a Brooklyn news conference going wild each time she took the mic. The soft-spoken Namajunas, who eschews trash talk for the power of positivity, said the upset win of 2017 was no fluke.

"I've got some new muscles," she said. "I've got more knowledge. But my spirit's the same. I'm like a tree. My leafs might change colour but my roots are the same."

McGregor played Paul Bunyan and took an axe to the UFC 223 tree. Holloway's weight issues gave it the last little nudge for the card to come toppling down.

There might not be time to save it. AP.