Conor McGregor had his first spar on Wednesday since suffering a horror leg break against Dustin Poirier last summer.
The Notorious got in the ring at Crumlin Boxing Club as he continues to prepare for a return to the UFC later this year.
McGregor wore green, white and orange gloves and a head band and shared a number of photos online.
Commenting on the Instagram post, he simply wrote: "My first spar."
The former two-weight champion is set to return to action at welterweight in the summer and is hoping to become the first ever fighter to win titles at three different weights in the UFC.
Speaking to The Mac Life recently, he said: “I’ve already won the 155lb title. I got myself down to a lightweight frame, but I’m big now. I feel strong, I feel healthy, I’ve got good energy. I’m coming back after a gruesome injury. I do not want to deplete myself, there should be no need to deplete myself.
"I feel confident against Usman. A jab happy, sloppy, orthodox wrestler with no submissions whatsoever. What’s he going to do? Where’s the danger here? I don’t see a danger with him. His ground-and-pound isn’t strong, plus he’s on the older side."
"The triple crown. No one’s ever obtained three knockouts in three weight divisions moving up like I have already, but no one’s ever obtained three UFC world titles cross three divisions like I will do also if we make this fight."
Get the latest sports headlines straight to your inbox by signing up for free email alerts