Stipe Miocic, right, is slow to get up against Jon Jones in a UFC 309 mixed martial arts heavyweight title bout, early on Sunday, Nov. 17, 2024, in New York. (AP Photo/Adam Hunger)

NEW YORK — Jon Jones sent Stipe Miocic into retirement with a stunning back kick to the ribs and used a series of blows to the head in the third round to retain the UFC heavyweight championship in front of President-elect Donald Trump in the main event of UFC 309 at Madison Square Garden on Saturday night.

Jones posed and played to the crowd on top of the octagon in front of Trump, Elon Musk, picked by Trump to lead a new Department of Government Efficiency, and Robert Kennedy Jr., Trump’s choice to lead the Department of Health and Human Services in his incoming administration.

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Trump walked out to a rousing ovation in front of 20,200 fans just before the start of the pay-per-view card and seemed to bask in thrill of the fighters that throughout the night gave him props — including Jones.

READ: Jon Jones stops Stipe Miocic at UFC 309, retains heavyweight title

JON. BONES. JONES. 🏆@JonnyBones defends his title with a TKO in round 3! #UFC309 pic.twitter.com/LULFQ6phnq

— UFC (@ufc) November 17, 2024

“I want to give a big, big thank you to President Donald Trump being here tonight,” Jones said to a roaring ovation that bled into a “USA! USA!” chant.

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“I’m proud to be a great American champion,” Jones said.

Widely considered the best fighter in the world, Jones (28-1-0; 1 NC) was the aggressor from the start and landed a series of shots to Miocic’s head in the first round. Jones showed he he plenty of fight left in the tank.

British heavyweight Tom Aspinall looms as the next challenger for Jones. Aspinall won a fight for the interim heavyweight title last November in the Garden. UFC CEO Dana White had promised Aspinall, who chatted with Arizona Cardinals QB Kyler Murray, would challenge the winner of the main event in a unification bout.

“As far as my future in the octagon, I decided that maybe I will not retire,” Jones said. “I know that we have options.

Miocic (20-5) failed in his bid to win the heavyweight crown for a third time and immediately announced his retirement.

“I’m done,” Miocic said. “I’m hanging ’em up.”

READ: UFC champ Tom Aspinall waits for title fight vs Jon Jones, Miocic

His last fight was in front of the next president.

White captioned a photo he posted on social media “the boys” that featured him with Trump, Kid Rock and Musk. Trump pumped a fist during an occasional outbreak of “USA! USA!” chants. He was flanked on his front-row seat by White on his right and Musk on his left and politely applauded the fight winners.

UFC fans wore red Trump hats and some waved flags emblazoned with his image during breaks in the action.

In a lightweight bout that made every fan from Kid Rock to Jordan Knight to Anthony Kiedis go wild at the finish in the fifth round, Charles Oliveira beat Michael Chandler via unanimous decision. The fight was a rematch of their May 2021 fight when Charles Oliveira topped Chandler to win the lightweight title. Oliveira staked his claim to another title fight with the win

The fifth round was about as good as it gets inside the octagon highlighted by Chandler dropping Oliveira twice on his back. The 38-year-old Chandler stepped inside the cage for the first time in two years, in large part because he waited for a fight that never materialized with Conor McGregor.

“We’ve been wondering where you’ve been, Conor,” Chandler bellowed in the cage. “Come back and beat me if you can.”

McGregor has been sued by a woman who accused him of sexually assaulting her in a Dublin hotel in 2018.

READ: UFC: Jon Jones injury calls off heavyweight clash vs Stipe Miocic

Chandler shook Trump’s hand after the fight on a card more charged with politics than punches.

Trump is tight with White, a relationship that dates to UFC’s formative years before its rise into a billion-dollar promotion. New Jersey was one of the first states that embraced UFC and White has long credited fights at the Trump Taj Mahal for helping the company grow into a heavyweight in the sports world. White both spoke at Trump’s request at the Republican National Convention and appeared on stage at the election party.

UFC fighters spoke this week in New York with excitement about earning the chance to fight in front of Trump.

“To see Dana up on stage at the election, I feel like that moment just elevated the whole sport,” Jones said. “Americans, people from around the world were like, who’s the bald-headed dude talking? That represents all of us.”

Bo Nickal topped Paul Craig by unanimous decision in a welterweight fight, then crouched to speak to Trump.

Trump threw his arms open when he spotted UFC broadcaster Joe Rogan. Trump and Rogan embraced and shared a few words before the opening bout of the main card.

Trump sat ahead of the election for a three-hour interview on Rogan’s podcast. Rogan helped encourage on the podcast some of Trump’s false claims about voting, election fraud and his loss in the 2020 presidential election.

Rogan endorsed Trump for president.

Donald Jr. and Eric Trump, and House Speaker Mike Johnson, R-La., also attended.