Conor McGregor knocked out by Dustin Poirier in second round at UFC 257

Dustin Poirier has stopped Conor McGregor with a flurry of punches midway through the second round of their UFC 257 bout in Abu Dhabi, avenging his 2014 loss to the Irish superstar.

Poirier caught McGregor with a series of shots to the head, before buckling his knees with two left hands.

He then sent McGregor to the canvas with a short right hand and finished the bout swiftly, causing stunned excitement among the few thousand screaming fans allowed to attend the bout.

In his first fight in a year, McGregor had a strong first…