Alex Pereira left no doubt he was the true light heavyweight champion in the main event, knocking out Jamahal Hill 3:14 of the first round at UFC 300 in Las Vegas.

But the lasting image of Saturday's card was Max Holloway's last-second knockout of Justin Gaethje for the ceremonial BMF title belt.

Holloway-Gaethje was arguably the most anticipated fight on the loaded card, and it not only lived up to expectations, but surpassed them before a sell-out crowd of 20,067 that roared over the final seconds and its stunning conclusion.

"That fight sucked the life out of everybody tonight," UFC President Dana White said.

"People ask me what I do. I sell holy moments. That was the ultimate holy moment. Let's just talk about his fight for the rest of the press conference."

The UFC -- which had its third-highest gate at $16.5 million -- awarded Holloway a $600,000 bonus for his performance.

Even though Holloway (26-7) was well on his way to a victory by decision -- two judges had him ahead 39-37 -- the former featherweight champion could have run out the clock.

He instead pointed to the floor in the final seconds and then traded blows with Gaethje (25-5).

It was a tremendous combination of punches from both fighters before the one that sent the now ex-BMF champ to the mat with just one second remaining in the five-round fight.

"This is the moment," Holloway said about going for the KO. "This is what the BMF is known for. If that's not a BMF moment, I don't know what is. If Justin was up, he would've given me those 10 seconds."

In the evening's final fight, Pereira dropped Hill to the canvas with a straight left hand and then pounded him. Referee Herb Dean stepped in to stop the fight, giving the Brazilian the victory.

"I see myself as the champion. I didn't want to let the belt go to my head," Pereira said through an interpreter. "I had to step in and win the championship."

Hill, 32, was the previous title holder, but a torn achilles tendon forced him to vacate the championship last July. That put the belt in Pereira's hands, eventually setting up this match-up and his fourth pay-per-view event in 16 months.

Zhang Weili (25-3) retained her women's strawweight championship in the co-main event, beating No. 1 challenger Yan Xiaonan (18-4) by unanimous decision. Each judge scored the fight 49-45.

No. 4 lightweight challenger Arman Tsarukyan (22-3) won by split decision over top-ranked challenger and former champion Charles Oliveira (34-10). Each scorecard was 29-28, two in favor of Tsarukyan.

Three-time NCAA wrestling champion Bo Nickal (6-0) led off the five-fight main card by submitting Cody Brundage (10-6) by rear-naked choke hold at 3:38 of the second round.