Conor McGregor will no longer fight Michael Chandler at UFC 303 on June 29 in Las Vegas, UFC president Dana White said Thursday night.

McGregor (22-6) was scheduled to headline the event but has withdrawn because of injury. It’s the first time in McGregor’s storied UFC career he’s pulled out of a fight for any reason.

The new main event is a light heavyweight title fight between Alex Pereira and Jiří Procházka, according to White.

White also announced two more new fights to the card: Diego Lopes will face Brian Ortega in the co-main event and Carlos Ulberg will now fight Anthony Smith in a light heavyweight bout after Jamahal Hill, who was slated to fight in the co-main event, is out due to injury.

According to White, the sellout event was on pace to set a record for the UFC, with a live gate of more than $20 million. The UFC has not announced whether the nontitle welterweight bout between McGregor and Chandler will be rescheduled.