Conor McGregor rages at UFC gathering

Mixed martial arts star Conor McGregor was involved in a backstage melee Thursday at a news conference in Barclays Center in New York, and video footage appears to show him throwing a guardrail at a bus full of fighters who are scheduled for Saturday's UFC card.

The New York Police Department said it wants to question McGregor.

Video showed McGregor with a group of people causing chaos as they took an elevator to the loading dock at the arena. He was shown tossing trash cans and causing trouble during his unannounced appearance. Video taken from inside the van showed a window being shattered. Another video showed McGregor lifting a barricade and running toward the van before being cut off by a security guard in the loading dock.

UFC lightweight Michael Chiesa went to the hospital after a laceration to his face caused by broken glass, UFC President Dana White said. It was unclear whether that will affect Chiesa's status for Saturday, when he is scheduled to face former lightweight champ Anthony Pettis.

McGregor hasn't fought for UFC since November 2016 and this week was stripped of the 155-pound championship he had never defended. McGregor profanely responded on Twitter and wrote, "You'll strip me of nothing."

McGregor is tight with UFC 223 fighter Artem Lobov, who was involved this week in a scuffle in a hotel with Khabib Nurmagomedov. Nurmagomedov fights Max Holloway for the lightweight championship left vacant by McGregor. Lobov is also on the card, but White said he would be removed.

Ohio State trustees are expected to approve a two-year contract extension for football coach Urban Meyer on Friday.

The $7.6 million total cash compensation package makes the 53-year-old Meyer the highest-paid coach in the Big Ten and third-highest nationally.

Meyer is 73-8 in his six years as head coach.

The Atlantic Coast Conference made Charlotte, N.C., the long-term home for its championship game, keeping it there through 2030.

Punter Marquette King signed a three-year, $7 million contract with the Denver Broncos less than a week after his surprising release from the Oakland Raiders. King is the only punter in NFL history to post at least a 40-yard net average in each of his first five seasons.

He also has a history of getting penalized for behavior on the field, including for a bucking bronco celebration. He said he didn't know if that was why Raiders coach Jon Gruden released him, but he said, "The Broncos encourage you to be yourself."

• The New York Giants signed durable cornerback William Gay, who has played in 176 consecutive regular-season and 15 postseason games, mostly with Pittsburgh.

• The New York Jets re-signed tackle Ben Ijalana, who has been a backup since 2013.

• Running back Stevan Ridley and wide receiver Justin Hunter decided to stay with Pittsburgh, signing one-year contracts.

Women's college basketball: Suzie McConnell-Serio is out after five years as coach at Pittsburgh, where she went 22-58 in the Atlantic Coast Conference. She is a former Lynx coach.

Swimming: Australia's team, made up of sisters Bronte and Cate Campbell, Emma McKeon and Shayna Jack, set a world record of 3 minutes, 30.05 seconds in the 4x100-meter women's freestyle relay at the Commonwealth Games in Gold Coast, Australia, lowering the mark Australia set at the 2016 Olympics.

Tennis: Defending champion Daria Kasatkina of Russia, No. 5 Julia Goerges of Germany and seventh-seeded American Madison Keys moved into the Volvo Car Open quarterfinals with straight-set victories in Charleston, S.C.

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