NEW YORK – He looked loose, he looked light, and he looked ready.

Conor McGregor showed up for the UFC 205 open workouts, and he was in great spirits. He greeted fans immediately at both ends of the New York Knicks home court, and then got down to business of sneaking a workout in. When he was through, he said he understood the magnitude of what he was doing Saturday night at Madison Square Garden.

"Saturday night I’ll be immortal," he said. "I get the second belt, raise it up, [it's] never been done before. It means absolutely everything to me. It’s my life’s work. We’re ready."

The featherweight champion McGregor, 28, will fight the UFC's lightweight champ Eddie Alvarez to try and notch his place in history. Should he win he'll become the first UFC fight to hold two belts concurrently.

McGregor, who nearly called his shot to a tee when winning the featherweight belt over Jose Aldo at UFC 196 last December, said he would defeat Philly's Alvarez via first round knockout. That sent up a cheer from the New York faithful, as well as the Irish who'd traveled over to see their champion.

He also said he was an enigmatic fighter who has never showed up to a fight with the same look, nor game plan.

"I feel I can do it many ways," he said. "I can paint a picture inside that Octagon. All you need to do is look at my previous fights. They’re all different."