Joseph Duffy out of UFC Fight Night main event with head injury

This weekend's UFC Fight Night event in Dublin has taken a major hit, as Irish lightweight Joseph Duffy has been forced off the card due to last-minute head injury.

UFC officials announced Duffy's withdrawal on Wednesday. The event, which had already lost its co-headliner between heavyweights Stipe Miocic and Ben Rothwell due to injury, will go on as scheduled. A flyweight bout between Paddy Holohan (12-1-1) and Louis Smolka (9-1) will serve as the main event.

According to a statement released by the UFC, Duffy, who trains out of Tristar MMA in Montreal, suffered a "mild concussion" earlier this week and was not cleared to fight. UFC president Dana White had previously announced the event, which airs on UFC Fight Pass, was an instant sellout. Tickets are refundable.

"Having learned that Duffy received a strike to the head during training earlier this week, UFC sent him for medical tests in Ireland for precautionary purposes," the UFC stated. "The results determined that Duffy suffered a mild concussion, and due to the proximity of the fight this Saturday, UFC will not permit him to compete. The healthy and safety of UFC athletes will continue to be the top priority for the organization. As such, UFC has respected standard athletic commission regulations, which recommend a medical suspension from competition as a result of the concussion."

Shortly after the announcement, Duffy (14-1) released a statement via Instagram.

"So sad to announce that I won't be fighting on Saturday," Duffy wrote. "Although it's hard to think about anything other than the disappointment right now, I can't wait to get another fight booked in and hope to be in the Octagon as soon as possible."

Poirier (18-4) wrote on Twitter he would like the bout to be rescheduled and even offered the date of UFC 195 on Jan. 2 in Las Vegas.

"I'll wait to reschedule. This is the guy I've prepared to fight for the last 10 weeks," Poirier said.

The UFC Fight Night airs on UFC Fight Pass.