It's Irish Heritage Night at TD Garden on Saturday night. So, the Boston Bruins brought in one of Ireland's biggest stars to celebrate.
UFC superstar Conor McGregor took the ice Saturday night before the Bruins' game against the Columbus Blue Jackets to perform the ceremonial puck drop, drawing huge cheers from a surprised Garden crowd in the process.
Here's a closer look, as "The Notorious" nearly forgot to shake hands with Bruins defenseman Zdeno Chara and Blue Jackets captain Boone Jenner after the drop.
You'll forgive McGregor if he was a little out of sorts; the Dublin native was in Chicago just hours earlier leading the city's St. Patrick's Day parade.
The former UFC lightweight and featherweight champion also is facing some legal trouble after he was arrested Monday in Miami for allegedly smashing a fan's phone.
But those charges didn't seem to bother McGregor, who was his normal charismatic self at the Garden on Saturday.
Click here to download the new MyTeams App by NBC Sports! Receive comprehensive coverage of your teams and stream the Celtics easily on your device.