Joe Duffy has been forced out of upcoming UFC Fight Night 76 main event, according to UFC.com, which today shared the bad news.
Check out the statement:
"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 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 health and safety of UFC athletes will continue to be the top priority for the organization.