Can someone name this spinning elbow KO?

Now I have Fight Pass can go back and watch all the good stuff but I can’t remember who was in this one.

It was the UFC,2 or 3 years ago maybe,a prelim fight on a PPV I’m thinking cos Rogan was commentating with DC.They mention the winner was looking for a spinning attack seconds before  it happened.

Anyone remember?

Matt serra GSP fight was a good one.