UFC 223 this Saturday, April 7 in Brooklyn will have an unexpected appearance from Waianae's Max Holloway in the main event, confirmed by the organization's president, Dana White.

The featherweight champion will go for a second championship belt -- against Khabib Nurmagomedov for the undisputed lightweight title

Holloway was out of his featherweight title defense against Frankie Edger in March, after suffering a leg injury during training. Just a month later, he's in to replace an injured Tony Ferguson in Brooklyn in a higher weight class. He was fighting in the 145-lb weight class and will be fighting in the 155-lb weight class.

On a plane tonight and with just 6 days notice, Holloway's manager, Brian Butler-Au, says, "Hawaii should be proud. He didn't hesitate. He didn't blink. He's a fighter's champion."

If he wins, he would be the youngest fighter to hold two titles and just the second UFC fighter to hold two belts at the same time.

Holloway's last appearance in the octagon was in December, where he scored a third round TKO win over Jose Aldo in UFC 218.

The "Blessed" is 19-3 -- the "Eagle," undefeated at 25-1.

Showdown gets underway at 4:00 p.m., Hawaii time.